I could almost agree with the idea that Linux on the desktop has been defeated but not by any forces outside such as Microsoft. I'm still using Gnome 2.whatever on Ubuntu 10.04LTS. I have about 18 months to watch and see what atrocities the KDE / Gnome/ Unity develop into and look for an alternative. If the dang guys had gotten together and merged some for the features from Gnome 2.x and KDE 3.x, we'd all have been further ahead but, as with particles of like charges, they've gone flying off in widely divergent directions and, I fear, been part of the reasoning for Canonical to try and push this Unity desktop which is widely divergent again from either Gnome or KDE.
And, of course, I agree with the previous comment. Microsoft hasn't recognized their daily dose of irony calling Google/Android and Chrome as major competitors without mentioning that these are primarily Linux based. My Android phone even shows what version of Linux it's based on.