I really don’t know how you aren’t grasping this.

Apple isn’t forcing anybody to do anything, because they make their own device. (iPhones are made by Apple).

Google is forcing OEMs to do all sorts of things, because they have no choice but to use Android/the play store. (Other phones, e.g. Samsung’s Galaxy S series, aren’t made by Google).

Do you understand? I’m not sure I can make this any more simple. What’s going on in your head that’s not letting you understand this?