You forgot #3: By letting anyone run mouse software on iPad, they have to use a stylus to operate it, which made Steve Jobs mad at Microsoft's pen computing div

You forgot #3: By letting anyone run mouse software on iPad, they have to use a stylus to operate it, which made Steve Jobs mad at Microsoft's pen computing division back in 2001. I honestly believe this to be way more important of a reason to Apple than anything else. The point of making you buy two computers is not to get twice as much money out of you, it's to get app developers to port their apps over to UIKit and make you re-buy all your apps twice. I tried UTM SE a while back. Using it with the Magic Keyboard was almost the Real Deal Laptop Experience, but if I ever took my iPad out of its Magic Keyboard then I'd have to use some really annoying mouse and keyboard emulation to use the same software. Apple's the kind of company that will absolutely put guns to the heads of their users to force them to not have a bad computing experience.