Windows 7 still lags behind XP users
Perhaps this also means that Windows 7 Professional and Enterprise is not being adopted among school and company IT departments as fast as Microsoft hoped.
One reason for this is the increased difficulty of creating and copying custom local user profiles on client PCs with Windows 7 (compared to Windows XP), and another is the lack of any easy upgrade path from XP (apart from reloading everything).
Didn't MS notice that Windows XP was their best-selling OS prior to 7's release, and remains so? Far and away, XP has the biggest user base of any current Windows OS:
Operating System Market Share
http://www.netmarketshare.com/operating-system-market-share.aspx?qprid=10
Don't throw away a bird in the hand, Steve.