I find Linux more capable on the Desktop than Microsoft. There are often times when MS's (using XP) internal burning software is inadequate - like burning images. I don't know if it's fixed yet, but for a long time XP just would not burn an image with its built in software and you had to use something like Nero. Never had a problem burning an image running any linux distro. Same with mounting .iso right from the harddrive as a cd-rom. It usually required some pay-for software (Alcohol 120%) in Windows, while a 2 minute search yield a few command lines to do it in Ubuntu. I know I'd rather save the money.
A typical mainstream Linux distro is ready. It's often superior in many ways to MS, as MS seems to deliberately makes their OS do almost nothing useful beyond the basics it seems (or was it that Monopoly ruling that caused this?) It's now just 3rd party apps for most people. Web Browsing has reversed itself (there are enough people who wouldn't switch from Firefox due to plug-ins they can't get in IE).
On the Corporate Level, solution providers are slow to change if they're an MS only shop. I even know the university/college level has problems. Blackboard and other such garbage.
I suspect the oncoming economic shitstorm may finally get corporations to really tighten their belts and that company-wide OS licenses may just not fit in the budget anymore looking ahead 5 years in some places. I just hope the current/next generation of purchase managers learns from the past and looks to do away with vendor lock-in in so many areas as much as possible.