That's where I think Apple doesn't have as much of a problem as many devs want them to have: they give a lot of leeway already to devs to create tons of apps th

That's where I think Apple doesn't have as much of a problem as many devs want them to have: they give a lot of leeway already to devs to create tons of apps that people want. C.f. the various App Stores. And when (eventually? I don't know of it happening yet) some "killer app" appears on another platform that isn't possible on Apple's platforms, they can just narrowly relax the rules to allow it. This is why I'm happy to see both models exist and thrive. Android would look like an old Blackberry if not for Apple. And likewise Apple can pick up any advantage that Android has (other than a few, such as meeting the needs of markets outside Apple's target).