In other words, it's detrimental to the brand and marketing of Windows - and Office, which seems to suffer from the same. There is no "Windows", "Windows 7" or "Office 2007" there is Basic, Somewhat Basic, Student, Enterprise, Ultimate, Blue, Purple, Turqoise, Cyan edition. I don't want Microsoft to be Apple, but just consider how easy iWorks and Mac OS X is to market by comparison. And fit into just one page.
I like that you'll call the next version of Windows "Windows 8", which, to me, is a step in the right direction. But the aforementioned is one of the many things that ensures that "corporate" will always be a part of a sentence about Microsoft.
I'm open to something along the lines of a "Private" and "Enterprise"/"Business" version, but I find it hard to believe that private super users won't want the features in the E/B edition. If you have to create separate versions, maybe you could make a "Basic" and "Advanced", which separates the users who don't need - or understand - the exclusive features from the companies and super users who do, and allows them to get a cheaper version without all the complex dingus.
(FWIW, I use Windows 7 and intend to do so for a while, but I'd love for Microsoft to be more of a start-up than a corporation. It feels complacent in some respects or just out of touch, which I assume is because it has to appeal to many platforms and customer types at the same time - but does it really have to show so much?)