[1] https://cdn2.unrealengine.com/apple-complaint-734589783.pdf
[1] https://cdn2.unrealengine.com/apple-complaint-734589783.pdf
The idea that a large platform like iOS can only have apps loaded through a market place controlled by the hardware manufactured is clearly in violation of the spirit of anti-trust laws.
However there's no legal precedent on this because no one with deep enough pockets to fight Apple has been angry enough to do it yet.
Meaning this could be great news for everyone if this goes to court and Apple loses as they should.
The big differentiator is that phones have become the most frequently used personal computing device for many people, and we expect the freedom to use it how we want.
I suspect Apple will argue the oppose. The "freedom" argument has been common in the perennial "iOS v Android" discussions, from which I'd note that iOS appeals to many because it's locked down; it's easy to use and it's not junk. The Play Store was a mess last I remember it. Some consider that freedom, others dislike it. It's a brand perception thing, and I wouldn't be surprised if Apple makes the same point, that an open platform would harm their brand reputation.