Vista, XP, MacOSX

"What I did do when I realized there was going to be a cut off in windows XP and I would eventually have to go to Vista was buy a Mac. OS X not perfect but very nice."

That might be a very nice option as an individual consumer, but trying to implement such a change at an organizational level would prove ineffective. Businesses would have to shell out not only a crapload of money (because, even if they are now cheapo-x86's they still cost a lot more than regular PCs), but they would have to spend zillions on migrating all their ERP/corporate software to MacOS.

For cost reasons, they would be hastier switching to Linux than MacOS, but then the same migration nightmare applies.

And organizations, large business and such are the ones that Microsoft really pimps out.