Will Windows 7 Win Back Defectors to the Mac? Probably Not. And That’s OK.
Some good analysis here. If Microsoft fails to spur widespread defection of Mac users with Windows 7, does that mean the OS is a bust? Don't think so. The right question (or one of them) is whether Windows 7 will thwart further defections from the Windows faithful.
Keep reading:
http://technologizer.com/2009/07/31/windows-7/