A second-order enforcement problem
Japan's Fair Trade Commission (JFTC) said on August 21, 2026 that it will examine whether Apple or Google would violate the Mobile Software Competition Act (MSCA, formally the Act on Promotion of Competition Concerning Specified Software Used in Smartphones) by using commercially sensitive information — submitted to them by rivals seeking interoperability — to gain a competitive edge. A JFTC official said companies requesting access to mobile OS functions had raised concerns about how their submitted data could be used against them. The commission is separately preparing a statutory review of the law itself, less than a year after it took full effect.
This is a genuinely different kind of problem than the one the MSCA was built to solve. The law's headline obligations — mandated third-party app stores, alternative billing, browser-engine choice — assume the risk is Apple and Google blocking competitors. This complaint alleges the opposite failure mode: the access mechanism itself becomes the vector for harm, because a rival requesting interoperability has to hand the gatekeeper a roadmap of its product, pricing, or technical plans to get plugged in.
The law and the article at issue
Apple, iTunes K.K. and Google LLC were designated "Specified Software Operators" on March 26, 2025 — Apple for its mobile OS, app store and browser, Google for OS, app store, browser and search, with iTunes K.K. designated jointly with Apple for the app store (JFTC designation notice). The law entered full force on December 18, 2025. Article 5 of the MSCA specifically bars a designated operator from using data it acquires — including through the platform's own interoperability channels — to competitively benefit its own products. If the JFTC finds a violation, the exposure is severe: surcharges of 20% of turnover tied to the infringing conduct, rising to 30% for a repeat violation within ten years — well above the 10% ceiling under Japan's ordinary Antimonopoly Act (JFTC statute page).
The review announcement is not, on its face, a response to this specific complaint — the MSCA's supplementary provisions already require the government to reassess the law roughly three years after full enforcement. But the JFTC choosing to start that process barely eight months in, in the same week it flags a data-misuse concern, sends a signal: the agency is treating early friction as evidence the statute's architecture may need adjusting, not just its enforcement.
Steelmanning the concern
The complaint deserves to be taken seriously on its own terms. Interoperability mandates only work if third parties trust the process enough to actually use it. If a rival must disclose device targeting, API usage patterns, or roadmap details to Apple or Google as a condition of access, and that information can leak — even informally, even without a formal data transfer — into product or ranking decisions, the mandate becomes self-defeating: firms either stop requesting access or accept a structural disadvantage for doing so. Regulators in the EU have wrestled with an identical dynamic under the Digital Markets Act, where gatekeepers hold both the review authority over a competitor's app and commercial interest in that competitor's failure. A regime that ignores this incentive problem is not actually pro-competition; it just relocates the point of capture.
Why the JFTC should tread carefully anyway
That said, an investigation into possible misuse is not the same as a finding of misuse, and the JFTC's own framing — "examine whether" — reflects that. The risk in moving straight to a statutory review off a still-unresolved complaint is that Japan's system, already the most punitive interoperability regime among major economies on paper, keeps expanding its scope reactively rather than letting the current rules run their course. Apple and Google's first compliance reports, published by the JFTC on February 17 and again on July 27, 2026, already drew pushback from the commission over insufficiently justified fee structures — evidence the existing tools (compliance reporting, public disclosure, the JFTC's own information-and-violation reporting channels) are functioning as designed, surfacing disputes without a fine having been levied yet.
A genuinely proportionate response treats the data-misuse question as a discrete, fact-specific inquiry: does Article 5 apply to interoperability-submission data, is there evidence of actual competitive use, and does existing guidance already cover it — before concluding the statute needs rewriting. Advocacy groups like the Coalition for App Fairness have pushed the JFTC toward a harder line on compliance; that pressure is legitimate input, not a substitute for evidence. A 20-30% surcharge regime is a serious deterrent already. The better test of the MSCA's design is whether it can resolve this dispute using the tools it already has, not whether Tokyo reaches for new ones before the first one has been tried.