because any article, any rational examination of the competition, only serves to prove the following point:
If it was truly the Year of the Linux Desktop, if Ubuntu offered everything that Windows 7 does; overarching ease-of-use, wide ranging software compatibility, (mostly) seamless integration of certain apps, support of the big software developers...
IT WOULD BE WINDOWS.
The market has evolved to best suit the front-runner in a game of percentages. Why does 'everyone' run Windows? Because the big apps are built for Windows. Why are the big apps built for Windows? Because everyone runs Windows!
I've used Ubuntu extensively. Loved the no-frills media players, the customization options, apt and the huge software repository, the freedom that comes from the command line. Why am I running Windows 7? Because World of Warcraft via Wine suffered from a kernel bug on AMD64 systems post 2.6.33. Because I couldn't interface with my Zune except thru VirtualBox (I didn't buy it, it was a gift :-), because I had to go thru 16 million steps to make the Plymouth bootloader do anything but 640x480. I love fooling around with all different types of Linux and Unix, and I have had said as my desktop OS many a time. I do it because it's fun, because it piques my interest as a nerd. Do I smash the keyboard in a fit of rage when I get booted from signing onto WoW for the 7th time and then succeed on the 8th for no apparent reason? You bet your ass I do. And then I install Windows 7.
I love open source, I get a kick out of installing a Linux distro, but I go to the status quo for the it-must-work stuff. And I have no problem with that, because you can't be all things to all people, and for Ubuntu to have the scope of something like Windows it would have to forgo so much of what makes it great.
To make an overly simplistic (slashdot-approved) analogy: You see a really nice car. It's nicer than yours. It has a Bose audio system and BBS rims, a turbo. You drive a Pinto. You are overcome with lust. You buy this car, and then you realize it still shifts the same, the sound, while better quality, is still the same music, and it gets you faster to a place you didn't really want to go. But the top is down, so you're free, as in freedom. You garage it and drive the Pinto. Why? Because the seat fits your ass _just_ right.