399 Good Reasons to Ditch Microsoft Windows Vista

As CNET reports, Microsoft has announced their new Windows Vista operating system prices.  The version of the OS that I would need to do everything I need within my home would cost me $399.00.  Or I could install Linux for free, or ditch the Windows OS completely and get some more Apples (a mini would do just fine).  Why does Microsoft want to overly segment their market?  Do they feel that since they have much of the business world over a barrel that they should just gouge the home users who happen to prefer some slightly more advanced features that are now in their premium packages only?  Or is this an opportunity for consumers to discover other operating systems that get the job done for less?