Hehe, what a joke. This software would seem to have a very limited market. Who are the people who typically say "I want a Mac but I need my PC for (something)"? Gamers, professionals who need expensive XP software, and people who just have a few little apps that don't have OS X versions.
Gamers and professionals are out, because they need advanced 3D stuff for games and Autodesk and such. Professionals might also need computationally intensive software for rendering, simulating, etc etc, which is really best done off of a VM.
And are people who have an app or two they are used to in XP but don't get in OS X really going to pay for Parallels plus an XP license and have to sacrifice more drive space and performance just for those? I doubt it.
I don't see how they can have much of a market, but either way, the whole thing just seems silly to me.