That way Firefox has to submit a different app for Europe, splitting its userbase and making it more complicated for developers. They are pulling every trick they can...
I think it will be an interesting experiment to see the impact of allowing other rendering engines. If the sky doesn’t fall, Apple doesn’t have a lot to argue with.
Most iPhone users use Chrome even tough it's just Safari but from Google. Google will just update the EU version to use Chromium and the in users will notice nothing.