1. Introduction

Multi-speed market evolution in platform ecosystems describes a situation in which different markets, user groups, technologies, and competitive processes develop at different speeds within the same digital ecosystem.

A platform may operate several interconnected markets simultaneously. For example, a technology company might provide a mobile operating system, an app store, digital advertising, cloud computing, online payments, and artificial intelligence services. Each market can evolve at a different pace:

Technology markets may change rapidly as new models, applications, and infrastructure emerge.

Consumer markets may evolve more slowly because of habits, switching costs, and network effects.

Business-user markets may depend on long-term contracts, technical integration, and access to established customers.

Regulatory markets may respond more slowly than technological developments.

Adjacent markets may become dependent on an established platform before effective competition develops.

This creates an important competition-law problem: a platform may face intense competition in one segment while exercising substantial and durable market power in another.

The central question is whether competition authorities should assess each market independently or examine how different rates of development interact across the entire ecosystem.

The answer is that both levels matter. Market-specific analysis remains necessary, but it must account for spillover effects, ecosystem dependencies, barriers to entry, and the possibility that dominance in a mature market may be transferred to an emerging one.

2. Meaning and principal characteristics

A. Uneven rates of market development

Markets rarely develop at the same rate. An established operating system may have stable market shares, while AI assistants, cloud-based applications, or digital payment services undergo rapid entry and innovation.

A market that is technologically new is not necessarily competitively open. An emerging service may already depend on a dominant operating system, app store, cloud provider, data repository, or distribution channel.

B. Network effects and cumulative advantage

Many platforms become more valuable as more users, developers, advertisers, or businesses join them.

For example:

More consumers attract more application developers.

More applications attract additional consumers.

Increased engagement generates more data.

Better data may improve personalisation and service quality.

Improved quality attracts further users and business partners.

These reinforcing effects can allow a platform operating in a mature market to influence the development of newer markets.

C. Different speeds of entry and switching

A new competitor may develop a technically superior product quickly but take years to acquire customers, obtain distribution, establish trust, and achieve compatibility with existing systems.

Consequently, rapid innovation does not automatically mean rapid competitive entry.

D. Asymmetric adjustment

An incumbent may adapt its products across an ecosystem more quickly than a smaller rival can respond. It can integrate a new feature into an established service, bundle it with existing products, or use its existing distribution channels to accelerate adoption.

Such conduct may be legitimate innovation. It becomes a competition concern where the incumbent uses market power to foreclose rivals rather than competing on the merits.

3. Legal framework

A. European Union competition law

Article 102 of the Treaty on the Functioning of the European Union (TFEU) prohibits the abuse of a dominant position. Multi-speed market evolution is relevant when an undertaking uses its position in an established market to influence competition in an emerging or neighbouring market.

Article 102 does not prohibit dominance itself. The legal issue is whether conduct by a dominant undertaking restricts competition through exclusionary or exploitative practices.

Article 101 TFEU may also apply where agreements between independent undertakings restrict competition, including through exclusivity arrangements or coordination affecting developing platform markets.

B. United Kingdom competition law

The Competition Act 1998, particularly Chapter II, prohibits abuse of a dominant position. The Digital Markets, Competition and Consumers Act 2024 also establishes a forward-looking regime for firms designated as having Strategic Market Status in relation to particular digital activities. The regime permits tailored conduct requirements and pro-competition interventions, subject to the statutory conditions.

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Multi-speed evolution is particularly relevant when a platform's established digital activity supports expansion into a newer activity, or when the platform's conduct affects the ability of competing businesses to develop.

C. Merger control

Competition authorities must consider whether acquisitions eliminate nascent competitors or reduce future innovation competition.

A target company may have low present revenue but possess valuable technology, data, intellectual property, research capabilities, or a credible pathway to challenge an incumbent in a developing market.

The assessment should therefore consider both existing market conditions and reasonably foreseeable competitive developments. It must remain evidence-based rather than assuming that every acquisition of an innovative business is anticompetitive.

D. Relevant economic concepts

4. Major case laws

The following decisions provide important principles for analysing differences in market development, platform power, ecosystem expansion, and future competition. They do not all use the phrase multi-speed market evolution; their relevance arises from the competition-law principles they establish.

Case 1: United Brands Company v Commission (1978)

Citation: Case 27/76, [1978] ECR 207.

Facts: United Brands was a major supplier of bananas in Europe. The dispute concerned its market position and various commercial practices, including discriminatory pricing and restrictions imposed on distributors.

Legal principle: The Court of Justice examined dominance by considering market structure, economic strength, competitive constraints, and the ability of an undertaking to behave to an appreciable extent independently of competitors and customers.

Relevance to multi-speed evolution:

A platform may possess substantial power in a mature market even where adjacent digital services remain competitive. Dominance must be established in the relevant market rather than inferred simply from the size of the overall ecosystem.

The case also illustrates the need to distinguish between the competitive conditions of different geographic and product markets.

Application: An established app store may be dominant even if competition among AI applications distributed through it is still developing.

Case 2: Hoffmann-La Roche & Co AG v Commission (1979)

Citation: Case 85/76, [1979] ECR 461.

Facts: Hoffmann-La Roche held a strong position in vitamins and used loyalty-inducing arrangements with customers.

Legal principle: A dominant undertaking has a special responsibility not to allow its conduct to impair genuine, undistorted competition. Loyalty-inducing exclusivity arrangements may constitute abuse where they restrict customers' ability to obtain supplies from competing undertakings.

Relevance to multi-speed evolution:

A platform may use commercial arrangements developed in an established market to restrict opportunities in a newer market. For instance, a dominant cloud provider might condition discounts on customers using its related software or infrastructure.

The arrangements could impede rivals at a different stage of market development, particularly if customers cannot practically switch providers.

Important qualification: The existence of discounts, exclusive arrangements, or integration does not automatically establish abuse. The assessment depends on the arrangements' design, context, coverage, duration, and exclusionary effects.

Case 3: Commercial Solvents Corporation v Commission (1974)

Citation: Joined Cases 6/73 and 7/73, [1974] ECR 223.

Facts: Commercial Solvents held a strong position in a raw material needed to produce a downstream pharmaceutical product. Its conduct threatened the activities of a customer competing in the downstream market.

Legal principle: A dominant undertaking's conduct concerning an upstream product can constitute abuse where it threatens to eliminate competition in a downstream market.

Relevance to multi-speed evolution:

This is a foundational authority for examining the relationship between markets developing at different speeds.

An upstream platform service may mature early and become difficult to replace, while downstream services remain innovative and contestable. If the upstream provider restricts access or changes supply conditions in a way that excludes downstream rivals, competition may be impaired before the downstream market has fully developed.

Example: A dominant cloud infrastructure provider restricts access to essential technical interfaces used by competing AI application developers. The developers may be unable to compete effectively despite having superior products.

The legal question is whether the conduct constitutes abusive foreclosure, not merely whether the upstream provider also competes downstream.

Case 4: Oscar Bronner GmbH & Co KG v Mediaprint (1998)

Citation: Case C-7/97, [1998] ECR I-7791.

Facts: A newspaper publisher sought access to a rival publisher's home-delivery distribution system.

Legal principle: A refusal to provide access to a facility owned by a dominant undertaking is subject to demanding conditions under the essential-facilities line of case law. These include indispensability, the likelihood of eliminating all effective competition, and the absence of objective justification.

Relevance to multi-speed evolution:

A rapidly developing market may depend on infrastructure created during an earlier market phase. However, the fact that a platform is important to a new entrant does not automatically create a legal obligation to provide access.

The case helps distinguish between:

A genuinely indispensable facility with no viable substitute.

A commercially advantageous facility that rivals would prefer to use.

A platform interface that could be opened through interoperability obligations under an applicable legal framework.

Application: A dominant AI platform refuses access to an interface used by competing applications. The authority must identify the nature of the refusal and the relevant legal test before concluding that access must be provided.

The Bronner conditions should not be mechanically applied to every form of discriminatory platform conduct.

Case 5: IMS Health GmbH & Co OHG v NDC Health GmbH & Co KG (2004)

Citation: Case C-418/01, [2004] ECR I-5039.

Facts: The dispute concerned the use of a pharmaceutical sales-data structure protected by intellectual property rights.

Legal principle: The Court examined exceptional circumstances in which refusal to license intellectual property could constitute abuse, including where the refusal prevented the emergence of a new product for which there was potential consumer demand, subject to the other applicable conditions.

Relevance to multi-speed evolution:

Intellectual property may be established in a mature market, while new applications based on the protected technology emerge later.

An incumbent's control over a data structure, interface, or technical standard can therefore affect the direction and speed of downstream innovation.

Application: A platform controls a proprietary data format that developers need to build compatible services. The assessment should examine whether access is legally indispensable, whether the relevant conditions for an abuse are satisfied, and whether licensing restrictions have an exclusionary effect.

The decision does not establish a general right to access all proprietary data or technology.

Case 6: Microsoft Corp v Commission (2007)

Citation: Case T-201/04, EU:T:2007:289.

Facts: Microsoft was found to have abused its dominant position through conduct involving interoperability information and the tying of Windows Media Player to Windows.

Legal principle: The General Court upheld key elements of the Commission's findings concerning restrictions on interoperability and tying, applying the relevant competition-law tests to the circumstances of the case.

Relevance to multi-speed evolution:

Microsoft demonstrates how an established operating-system position can influence the development of complementary software markets.

A dominant platform can affect downstream innovation through control over interfaces, technical information, distribution, and product integration.

This creates a temporal asymmetry: the incumbent benefits from an established installed base, while competing products must overcome compatibility and distribution barriers.

Application: A dominant operating system integrates a new AI assistant and restricts rival assistants' access to system-level functionality. An authority should examine whether the integration improves the product through legitimate technical efficiencies or unfairly limits competing services.

The case is particularly important for understanding how technical decisions can shape future market structure.

Case 7: Google Shopping (2017)

Citation: Case T-612/17, Google and Alphabet v Commission, General Court judgment of 10 November 2021.

Facts: The Commission found that Google favoured its own comparison-shopping service in general search results while treating competing comparison-shopping services less favourably.

Legal principle: The General Court upheld the Commission's core finding of abuse involving the more favourable positioning and display of Google's own comparison-shopping service.

Relevance to multi-speed evolution:

Google Shopping illustrates how a platform controlling a mature distribution channel can influence competition in an adjacent service market.

The search market and comparison-shopping market need not develop at the same rate. Even if new comparison services innovate quickly, their growth may depend on traffic from the established search platform.

The case demonstrates why authorities should investigate the interaction between a platform's established function and its newer commercial services.

Application: An established digital assistant gives systematically preferential visibility to the platform's own travel, retail, or financial service over competing providers. The authority would need to examine the conduct's effects and objective justifications in the relevant context.

Case 8: Google Android (2018; appeal judgment in 2026)

Citation: Commission Decision AT.40099, Google Android; Case C-738/22 P, Google and Alphabet v Commission, judgment of 2 July 2026.

Facts: The Commission's Android decision concerned contractual restrictions associated with Google's mobile ecosystem, including tying, payments linked to exclusive pre-installation, and restrictions affecting Android forks.

Legal principle: The proceedings concern the use of contractual and distribution arrangements across interconnected mobile markets, including search, operating systems, and app stores. The 2026 Court of Justice judgment addresses the appeal and the assessment of the infringement and its effects.

Relevance to multi-speed evolution:

An established mobile operating-system ecosystem can influence competition in markets that emerge within it. Distribution advantages, pre-installation, and contractual restrictions may affect which services obtain sufficient users to compete.

The case is relevant to the risk that competitive opportunities in one market are shaped by entrenched power in another.

Application: A platform's established distribution network becomes the principal channel for a new category of AI services. Exclusive pre-installation arrangements may affect rivals' ability to reach users even if their technologies are competitive.

The analysis must distinguish lawful product integration from conduct that restricts competition.

Case 9: Alphabet and Others (Android Auto) (2025)

Citation: Case C-233/23, EU:C:2025:110, judgment of 25 February 2025.

Facts: The dispute concerned Google's refusal to make Android Auto compatible with a third-party application.

Legal principle: The Court of Justice clarified that the stringent Bronner criteria for a refusal to supply are not automatically applicable to every refusal to provide interoperability with a platform generally open to third-party complementors.

The assessment depends on the nature of the conduct, the platform's characteristics, and the applicable objective-justification analysis.

Relevance to multi-speed evolution:

New applications may emerge more quickly than established platforms update their interoperability arrangements. If third-party services cannot integrate with a widely used platform, their development may be delayed or commercially undermined.

This case is particularly relevant to connected vehicles, mobile applications, digital assistants, and emerging AI services.

Application: A platform introduces a new technical environment but refuses to support compatible third-party applications. Authorities should examine whether the refusal is objectively justified and whether it restricts competition, without automatically presuming that every incompatibility is unlawful.

5. Comparative significance of the cases

Taken together, these authorities show that multi-speed evolution is best understood as an analytical framework connecting established competition-law principles, rather than as a separate legal offence.

6. Principal competition concerns

A. Leveraging mature-market dominance

A firm may use an established market position to strengthen its position in a developing market.

Examples include:

A dominant search provider promoting its own emerging AI service.

A mobile operating-system provider favouring its own payment service.

A cloud provider using infrastructure advantages to strengthen its own AI products.

An established app store restricting rival distribution channels.

Authorities should establish whether the conduct has exclusionary effects and whether it is justified by legitimate competitive considerations.

B. Premature market tipping

A market may initially contain several competing services but become concentrated rapidly because of network effects, defaults, distribution advantages, or switching costs.

Once users and businesses have committed to a particular ecosystem, later entry may become substantially more difficult.

Competition authorities should not assume that concentration necessarily proves abuse. They should determine whether the tipping process reflects competition on the merits or exclusionary conduct.

C. Innovation foreclosure

An incumbent may prevent rivals from gaining the scale, data, distribution, or interoperability necessary to develop competing products.

The competitive harm may appear only after several years. A short-term assessment of prices and output may therefore fail to capture the full effects of the conduct.

Relevant evidence includes:

Product-development timelines.

Internal strategy documents.

Customer switching and multi-homing rates.

Technical access restrictions.

Changes in rival entry and exit.

The availability of realistic alternative distribution channels.

Evidence concerning product quality and innovation.

D. Cross-market bundling

A platform may bundle an established service with a newer service. Bundling can improve convenience, lower costs, and enhance integration.

It can also make entry more difficult if consumers must adopt the incumbent's product to obtain another service, or if rivals cannot compete on equivalent terms.

Authorities must evaluate the actual effects, including consumer benefits and efficiencies, rather than treating bundling as inherently unlawful.

E. Regulatory time lag

Competition authorities may be unable to respond as quickly as digital markets evolve. By the time an investigation concludes, a new technology may have displaced the original product or become dependent on the incumbent's infrastructure.

This creates a case for effective interim measures where legally justified, timely evidence gathering, and forward-looking assessments that remain grounded in verifiable evidence.

7. How competition authorities should assess multi-speed market evolution

A sound assessment can be structured into seven stages.

1

Define the relevant markets

Identify the product, geographic scope, customer groups, and competitive constraints in each affected market. Do not assume the whole ecosystem is a single market.

2

Map the development speeds

Compare entry, adoption, innovation, switching, and investment cycles across the established and emerging markets.

3

Identify ecosystem dependencies

Determine which markets depend on the platform's data, infrastructure, interfaces, customer access, or default settings.

4

Establish market power

Assess market shares, entry barriers, network effects, buyer power, multi-homing, switching costs, and realistic alternatives.

5

Test the conduct

Examine exclusivity, tying, self-preferencing, discriminatory access, interoperability restrictions, and acquisitions using the applicable legal test.

6

Evaluate dynamic effects

Consider likely effects on future entry, innovation, consumer choice, quality, investment, and the possibility of market tipping.

7

Select proportionate remedies

Consider interoperability, non-discrimination, portability, transparency, or structural remedies where appropriate and legally available.

8. Hypothetical case study: An AI platform ecosystem

Consider a hypothetical company called Alpha Digital.

Alpha operates a mature mobile operating system and app store. It subsequently launches an AI assistant, an AI application marketplace, and a cloud-based model-hosting service.

Its operating system has an established user base, but the AI application market is still evolving rapidly.

The alleged conduct

Alpha integrates its own AI assistant into the operating system, gives it prominent default placement, and limits third-party assistants' access to certain system functions. It also offers discounted cloud services to developers that distribute their products through Alpha's marketplace.

Competition-law analysis

First, market definition. The authority should investigate whether operating systems, app distribution, AI assistants, and cloud model hosting constitute distinct relevant markets or whether competitive constraints require a different definition.

Second, dominance. A strong position in the operating-system market does not automatically establish dominance in every AI market. Nevertheless, the operating-system position may provide important distribution advantages.

Third, exclusionary effects. The authority should investigate whether default placement, interoperability restrictions, and commercial conditions materially disadvantage rival AI assistants or developers.

Fourth, efficiencies. Alpha may argue that integration improves security, performance, latency, or user experience. Those claims should be assessed against technical evidence and the availability of less restrictive alternatives.

Fifth, dynamic competition. The authority should assess whether the conduct prevents rivals from achieving the scale needed to innovate and compete, rather than relying solely on present market shares.

Possible legal framework: Article 102 TFEU or Chapter II of the UK Competition Act 1998 may apply if their respective requirements are satisfied. In the UK, the DMCC Act 2024 regime may also be relevant if Alpha is designated as having Strategic Market Status for the relevant digital activity and the statutory conditions for intervention are met.

The outcome would depend on the evidence and the applicable legal tests; Alpha's size and integrated product design alone would not establish an infringement.

9. Remedies and regulatory approaches

Remedies should address the identified harm and should not simply force every market to develop at the same speed. The objective is to preserve effective competitive opportunities, not to guarantee success for particular competitors.

10. Critical evaluation

Multi-speed market evolution exposes a limitation of static competition analysis. A snapshot of market shares, prices, and current output may not adequately capture how power in an established market influences the development of an emerging market.

However, a purely forward-looking approach also carries risks. Authorities cannot reliably predict every technological shift, and interventions based on speculative future harms may discourage investment or prevent beneficial integration.

A balanced assessment should therefore:

Use established legal standards to establish dominance and identify the relevant infringement.

Incorporate credible evidence about future competition and innovation.

Distinguish genuine technological advantages from exclusionary strategies.

Account for consumer benefits, security, privacy, and investment incentives.

Review remedies as markets change, while respecting legal certainty and procedural fairness.

The central challenge is not to eliminate differences in market speed. It is to prevent an undertaking from using entrenched power in one market to undermine the competitive process in another.

11. Conclusion

Multi-speed market evolution is a significant concept in modern platform competition law because digital ecosystems combine mature infrastructure with rapidly developing services. The interaction between these markets can generate network effects, cumulative advantages, switching costs, and barriers to entry that are not visible from a single-market snapshot.

The decisions in United Brands, Hoffmann-La Roche, Commercial Solvents, Bronner, IMS Health, Microsoft, Google Shopping, Google Android, and Android Auto provide useful legal principles for examining dominance, leveraging, interoperability, exclusion, and access.