M$ didn't acquire VPC so they could continue selling it to Mac users. They picked it up so they could get their virtual server technology.Maybe this was one of Microsoft's less-than-smart acquisitions.
I've always been impressed by VPC, it's a remarkable piece of SW. The fact that it works at all should impress anybody around here that writes SW... Having said that, it will almost always be cheaper/faster to simply buy a cheap PC for PC duties. Blasphemy!