Mozilla criticizes Apple's plans to restrict BrowserEngineKit to EU-specific apps, forcing “Firefox to build and maintain two separate browser implementations”
Apple's EU iOS changes were framed as opening default-browser choice and third-party web engines, while Mozilla had already been doing exploratory work on a Gecko-based iOS browser should Apple's WebKit requirement loosen. The EU-only scope now becomes the practical constraint on that opening.
This matters because a platform rule can permit engine competition in principle while making participation costly for browser vendors that ship globally. Apple's earlier EU browser-engine and default-browser plan is therefore inseparable from the geographic conditions attached to it.
First-order effects
Mozilla must support a distinct Firefox implementation for the EU if it uses BrowserEngineKit there, adding engineering and maintenance work relative to a single global product path.
Apple's alternative-engine option is immediately less portable for browser makers: it is available only through EU-specific apps rather than a single iOS distribution model.
Second-order effects
Other browser vendors must weigh the benefit of an independent engine against the cost of regional product divergence, which can limit how broadly they deploy an EU-only capability.
The burden extends beyond code: subsequent coverage says third-party engine development and testing is limited to devices physically in the EU, creating an additional EU-based testing and staffing constraint for participants.
Third-order effects
If regional implementation conditions persist, iOS browser competition may develop through separate EU and non-EU product tracks rather than a globally contestable browser-engine market.
The episode shows that platform-opening rules can shift competition from formal access rights to the operational terms of access—such as distribution scope, testing location, and the cost of maintaining parallel software.
The trend: This is one data point in the fragmentation of global software products as platform regulation opens markets through region-specific compliance paths.
My comment in TechCrunch about Apple opening up its platform (iOS operating system) to other web browsers. That is a huge change, and a huge success of EU Digital Markets Act. Unlocks competition in web feature developments, for better user experience. This also means that Goo…
NEW BROWSER FOR iOS INCOMING! Our new AI-centric Opera One browser will be built on its own engine, celebrating the opening of iOS to alternative browser engines. [image]
I've been very critical of Apple for how they've chosen to abide by various government or court-ordered guidelines but I'm sorry Mozilla, I don't think that this is an unfair burden. https://www.theverge.com/...
We welcome Apple's decision to allow alternative browsers on iOS as a result of the requirements of the EU's Digital Markets Act (DMA), allowing us to provide iPhone users with an AI-powered alternative to Safari.
Apple's new rules in the EU are supposed to open up iOS to alternative browsers, but Mozilla says they put an unnecessary burden on developers. Surprise surprise! https://www.theverge.com/...
I think it's time to boycott Apple. They continued anti-competitive and anti-user behavior is disgusting. More so, in 1984, Apple released their now famous 1984 ad, but today, they have become this dystopian monopoly [image]