Why would you want to be non-MS?

F/OSS brings with it massive (*MASSIVE*) overheads in training and support, orders of magnitude higher than for any comparable MS product. Hence it makes sense to stick with MS even if the purchase cost is higher because to the enormous saving in training an support.

Users know Office, Explorer, IE, etc. They do not know KDE, HuggyBear, BouncingPanda (or whatever childish names the Linux apps have). Not only would you have to train end users on new OSs/applications; you would need to re-train or hire in new tech staff. That's just crazy. And that's before we get into hardware and the terrible support Linux has for a lot of what is out there.

Spending all that tax revenue to please a niche sector is plain stupid. Leave Linux in the web server farm and the geek's bedroom where it belongs.