Funny, that's not the experience of the majority of people in this thread. Several flavors of Linux that have been listed are rock solid and require little to no user action to work and launch games. You can list all of the problems you want, that's just 1 person's experience. It could be because of the distribution you chose, because of your skills, anything. But it's not statically relevant.
Also, please, Windows is known, has been known, and probably will be known for having shit break randomly. Don't you think there would be a tiny bit more Windows dominance on the servers side if the opposite were true?
Yeah, "linuxism", that must be it... That or it's possible that the OS and distributions have evolved while you were not looking.
Linux dominates on servers because of that yes. Also because of its licensing costs, being open source, stable, secure (please don't try to tell me Windows is more secure, please please please), better performance and lesser response time. Because a Debian stable will never break with simple security updates. I am also quite curious about getting a source for that claim that Windows Server is coming back.
Finally, do tell me where I mentioned MacOS. Unless you think that MacOS and Linux are the same? That wouldn't surprise me considering your apparent knowledge (or lack of) about Linux. FYI MacOS is based on a BSD kernel.