And what, pray tell would one run ReactOS on? Has it ever been booted on real hardware? If Microsoft allows emulated operating systems to run on the future version of Windows that tightens the chains to the point it won't run Win32 apps anymore people would simply run Windows (N-1) in the emulator and achieve a near 100% compatibility vs the 1% compatibility ReactOS offers more than a decade after beginning the project.
Hint: If they ever clamp the chains, emulation will become an enterprise feature, and on the enterprise versions Win32 apps will still run anyway. Microsoft is evil, and although not geniuses they also aren't stupid.