I don't think it would actually restrict Apple. So far they are the owner of the playing field (iOS) and also invite other players (vendors) to play there, but whenever they also play they reserve the right to step in areas of the field noone else is allowed to.

They are now no longer allowed to play like that, so that maybe adds a new burden to them compared to before. But I wouldn't chime in on the framing how much they are suffering from that...