> You'd have to stop people owning general purpose computing devices for that to be fully effective.

That's been the corporate and probably governmental wet dream since the iPhone released. I think the only thing keeping the x86_64 scene from doing the same thing is legacy software support, and open alternatives existing. If Microsoft could've viably banned getting software from anywhere outside their store, they would have.

I would argue with all the computers they sold in "S mode" a few years ago, they earnestly tried it in the home market.