"When you quit picking on Windows and start picking on Unix vendors for not being 'Linuxy' enough, you've become a true zealot. However, if you consider administration, education, software development, and the labor market (at least in the U.S.), the notion of Linux being the de facto standard Unix starts to look a little less goofy.
"I know a ton of admins, and I can't think of any two who took the same path to becoming an administrator. Some of the guys who've been around for 15 or 20 years got their starts as operators. Whatever is going on today with regards to deploying services, they were probably around when it was invented. To these guys, Unix is pretty much Unix. Sure, there are religious affinities -- BSD vs. System V, etc. but for the most part, they've seen so much that as long as something looks something like Unix, they can adapt. I do not believe this group is what you'd call a majority of today's administrators..."