Microsoft or Dell or one of Apple's competitors should do the following...

Hire that annoying "Hi, I'm a Mac" guy from the Apple commercials. Have him talking a-mile-a-minute about how great Windows now runs on the Apple Mac. Using Parallels, you can't tell the difference. Now you can run all your Windows software inside your Mac.  On and on about how, now that Mac users have access to Windows, they will never need anything else.

And after all that, have the poor "Hi, I'm a PC" guy say, "So why don't you just get a Windows PC then?"

Seriously, I just listened to a podcast on Parallels by Steve Gibson and Leo Laporte (Security Now), and they went on and on about how fast Windows now runs on a Mac.... but didn't spend any time discussing the downsides to such a setup. "So if you need a fast version of Windows so badly, why don't you just get a Windows PC?" was all I could think at the end.