Do Interoperability Mandates for App Stores Backfire on Competition?
Analysis reveals 5 key thematic connections.
Key Findings
Developer Sovereignty
App store interoperability mandates primarily benefit independent software developers by enabling direct distribution and bypassing gatekeeper-controlled payment systems. This shift weakens dominant platforms' control over discovery, pricing, and monetization—mechanisms that have historically locked developers into platform-specific ecosystems. The overlooked dynamic is that developers, not just consumers or rival app stores, gain new agency to dictate terms of engagement, including data ownership and user relationship continuity, which undermines the platforms’ lock-in economies. Developer Sovereignty captures the reconfiguration of power from platform to creator when distribution bottlenecks are legally dismantled.
Infrastructure Shadowing
Telecommunications providers in emerging economies benefit from app store interoperability mandates by positioning themselves as alternative distribution and authentication layers, leveraging existing billing relationships and network-level access. As dominant app stores lose their default status, telecom firms can interpose their infrastructure—via SIM-based identity, zero-rated app delivery, or carrier billing—to intercept transactions and user data flows once monopolized by Apple and Google. This dependency is rarely acknowledged because standard analyses treat networks as passive pipes, not strategic actors capable of re-layering control. Infrastructure Shadowing identifies how upstream network operators exploit interoperability to re-insert themselves into value chains they had seemingly ceded to platforms.
Regulatory Arbitrage Pathways
App store interoperability mandates primarily benefit large multinational platforms by enabling them to reframe compliance costs as strategic barriers. These firms leverage jurisdictional misalignment—such as differing implementation timelines across the EU, US, and South Korea—to selectively route traffic and delay integration in high-margin markets while branding themselves as cooperative elsewhere. Because dominant actors already control backend infrastructures and developer relations, they convert interoperability’s procedural complexity into a throttle mechanism, selectively granting or slowing third-party access. This undermines the intuitive assumption that openness inherently erodes dominance, revealing instead how procedural regulation can be weaponized by those with scale and legal infrastructure.
Developer Bargaining Leverage
Epic Games gains negotiating power over platform fees by leveraging interoperability mandates in South Korea’s revised Telecommunications Business Act, which compelled Apple to allow alternative payment systems in 2022. This shifted fee extraction from Apple to developers, enabling Epic to retain up to 80% of revenue per transaction—up from 70% under Apple’s pre-mandate 30% commission. The case reveals that when regulators force backend interoperability (e.g., payment routing), dominant platforms lose control over revenue capture points, redistributing leverage to large, vertically integrated developers who can now bypass proprietary tolls. This outcome is underappreciated because most analysis focuses on app store entry, not transaction routing.
Platform Ecosystem Fragmentation
Samsung’s pre-installation of its own Galaxy Store and support for third-party stores on Android in response to South Korea’s App Distribution Act fragments the Android app ecosystem into competing distribution channels. This erodes Google’s default dominance in app distribution, enabling OEMs to capture user engagement and monetization data independently. Unlike shifts in developer behavior or regulatory filings, this case shows how hardware manufacturers become active gatekeepers in a mandated interoperable environment, redistributing power vertically across the stack. The underappreciated insight is that interoperability does not democratize access but re-concentrates it through new gatekeeping roles.
