I came across this blog post by Robert Scoble while checking something for a GPS data collector that I writing, it has a useful data point to file in the back of the mind. It has nothing to do with GPS data collection or even what I was googling for, but it explains a very good reason why you won’t see Linux on corporate desktops for the conceivable future.
I can sum it up for you with one sentence: Linux fonts and their technology are no match to Windows and the Mac.
I'm not bashing Linux, I have a few things that run on it at home. Not paying the Microsoft tax makes perfect sense for devices using embedded OS's. I love my TiVo and the fact that it uses an OS that doesn't blue screen. My $70 router/access point is running a pretty cool 3rd party firmware that could only be done if it was using Linux.
But on the desktop, I want a desktop that easy on the eyes. The quality of the fonts and how they are displayed are a huge part of that. Microsoft recognizes that and they spend a lot of time and money on fonts. Consolas is a very nice typeface for pounding out code. It's not everyone's cup of tea, but I like it.