Microsoft peaked with 2000.....a perfectly functional OS that wasn't too intrusive. XP only put a pretty face on it and marginally made it easier to, say, home network...thats about it.
Vista? oh god only when I have absolutely no other choice.
Mac OS's? Give me a break......they're going down the dark path too..an OS should be invisible.....but the truth is you can only sell people so many versions of "Windows".
We've been running our apps in "Windows" (enter any OS you want, from Mac to the C64's GEOS environment) for going on 25 years now....and I really dont see a more efficient or more useful environment anytime in the future.
Minority Report hand controlled OS? hahaha....yeah people will be cramping up in five minutes..a.nd what about Porn? how do you work THAT out!?