That would be true but there are older versions of windows out there still floating around and probably being used out there in the wild. So I doubt that happen anytime soon. Unfortunately some Mac software of the same software just cost more then the PC version not to mention hardware and til that comes down to PC version prices that will be a hard sell. Also there more people writing software shareware and paid for PC O/S so until that crowd of programmers stop suddenly of which I highly doubt it the PC will still rule over the Mac. For me Aero is a good feature to have but you have to have the hardware to run it and it does require a good amount of resource to do it but it's much nicer to the eye then blocked views. I for one think Aero is a good feature just that the requirements means your system has to be able to able to handle it. I have a Dell 1525 T8100 4Gig and it uses W7x64Ultsp1 and it works great and before and after looks comparing those with Aero and no Aero is dramatically different to the eye.