Not really, since you can just disable Secure Boot and run a hacked copy of Windows Loader, or enrol the hash of said hacked Windows Loader and boot with Secure Boot enabled.
That's debatable. For Microsoft, it's preferable you run a pirated Windows (and, hopefully, a pirated Office) than become part of a non-Microsoft ecosystem. Network effects apply and, as soon as too many people switch to non-Microsoft ecosystems, the value of using Microsoft decreases.
They're absolutely out of their fucking minds if they think this is a good idea. People are already slowly oozing towards better operating systems, and if they actually manage to remove the possibility to run their shitty OS without any cost, they're totally screwed.
