The funny thing is even though it has been done, there's not even that much of an incentive to do it because Windows on consumer side has so little defense that most attackers opt for lazy premade viruses sold on the darkweb, and Windows on enterprise side is so insanely insecure that the only groups that make high end rootkit level software are usually government backed APTs.

Microsoft also very conveniently avoided making a new filesystem from old ass NTFS because SSDs started popping up around the time Window's IO operations were clogging every old machine with HDDs.

I remember upgrading from 7 to 8 and the disk IO just sat at a solid 100% at idle lol.