They're half a second away from offering an iPad running MacOS (or a tablet MacBook, take your pick). They're baby-stepping their way to this, obviously.
I've yet to figure anything you can do with these but watch videos and play some games; I always end up grabbing the laptop.
They're amazing for digital art. That and reading PDFs at near true-life size.
Doubt. Apple doesn't see hardware sales as a primary revenue driver, rather they're a rent-seeking company that makes money by being the iron-fisted middleman for the app store. They don't see any benefit from user freedom if it makes them less money in the end.