>Not on the formal standards track.
What a coincidence, Apple gets to vote on what the "formal standards track" is, and they have voted against anything that would hurt their app business.
>But go on assuming it's all about being anticompetitive...
Okay... Apple are anticompetitive and always have been. They forbid their OS from being installed on any hardware that isn't manufactured by Apple, even though it was easily possible to do. Their walled garden is very famous for being anticompetitive - banning any browser from using their own browser engine and forcing Safari is absolutely anti-competitive.
You know what? Just go fucking read the DOJ antitrust suit against Apple, it details the very many ways Apple is anti-competitive:
https://www.justice.gov/archives/opa/media/1344546/dl?inline
But I bet you won't.