apple does not let you use your own app store MS does on the pc
I'm using a Mac right now and I'm able to buy software from other stores such as Steam, Itch, Humble, etc. There's even an open source Mac package manager. iPhone, sure, that's a walled garden.
Backwards compatibility is one of the prime reasons why X86 has lasted so long. Even today, a tremendous amount of software is 32 bit. Intel would be eliminating one of the primary reasons people still use their chips.
Apple completely dropped 32-bit support in 2019 and people got over it. You might be thinking 'well Apple has a small market share anyway', but they did the same thing on iOS in 2017 (the 'appocalypse') and there wasn't a mass exodus to Android. I think if Intel did this, developers would pretty quickly follow and they'd end up with an advantage over AMD a few years down the track.
When it is incorrect, it is, at least *authoritatively* incorrect. -- Hitchiker's Guide To The Galaxy