Yes, but the two things that keep people using Windows are legacy applications and games. They’d also have to be ported to ARM, and I don’t see that happening in a hurry.
I think it requires special hardware (x86 emulation, which is 32 bit only), and many apps won't be ported to ARM for a while.
That being said Apple might find x86 emulation useful too.
So you run on ARM just to do x86 emulation? How does it work?
Windows might have been recompiled to ARM but it will take a while before all apps have. That's also why WinRT was a failure. You couldn't run anything useful on it.
RT's big problem was the lockdown. They wanted everyone to use the Windows Store. You can't even run architecture-neutral .NET apps on the desktop in RT without a developer unlock.