Apple didn’t force anyone else to install their App Store. That’s where Google differs and what Epic proved they did. They can’t prove Apple did anything like that since Apple doesn’t offer iOS to anyone else.
I probably don't know about the case but this sounds completely backwards. Aren't Google (not that I like them) the ones which do allow third party app stores and Apple do not?
Apple didn’t force anyone else to install their App Store. That’s where Google differs and what Epic proved they did. They can’t prove Apple did anything like that since Apple doesn’t offer iOS to anyone else.