XP had the applications people wanted, that is not Linux fault.
People just want their apps. So the Gnome people (Red Hat) should just stop all that nonsense and just write apps for Qt, instead of starting all over again on every possible level based on nearly abandoned GTK.
At this rate and with the usual time slips "Gnome OS" will be done by 2015 (maybe). Windows, Android, IOS, OSX and even ChromeOS, Tizen, FirefoxOS and OpenWebOS will be far more ready for what the future holds at that point than anything a few dudes at Red Hat dream up.