I just see it often at the hands of devs. At my work we got everyone a Thinkpad running Ubuntu, but some wanted Macs and they got them. At the end of the day, this is a theological discussion influenced mostly by emotion. Pretty much a zero sum game - these are all tools best used at the hands of those who use them.

That's easy. Go to any Linux or tech/developer conference. Most attendees will have Macs running OSX.

Go to a .NET/Java or game developer conference. Most attendees will have PCs running Windows.

That's the smallest group of developers who are using a mainstream OS.