I agree with this.In many ways I agree, but I'd also be in full support (and maybe admiration?) of Microsoft if they just turned around one day and said "F**k backward compatibility, it's been hindering our OS development for years. Let's start with something totally new.". And then off they go, get rid of all the legacy crap in Windows, slap in a brand new filesystem, ditch the registry...etc etc.
At the end of it all we'd probably have a bloody amazing OS that would knock the crap out of Apple, Linux...etc, but just wouldn't have any programs to work on it.
Ive used Vista off and on many times. Ive also created my own "lite" copy with everything takin out that i could possibly take out and it still hogs ~700meg of my ram. Since im a gamer and like max performance for everything i dont like having a 10% drop in performance. Since i have to much takin outa my check at the end of 2 weeks i cant afford to go 4gig and an 8800GPU. So i stick with XP to get the max performance outa my machine. Simple as that.