Most servers around the world run Linux. The same goes for almost all supercomputers. That’s astonishing in a capitalist world where absolutely everything is commodified. Why can’t these big tech companies manage to sell their own software to server operators or supercomputers? Why is an open, free project that is free for users so superior here?
Most servers do not need a fancy user interface. They don’t have monitors attached to them. Most of the other OSes you listed come bundled with a ton of user experience software along with the expectation a human will directly interact with them.
Servers are typically deployed and managed with automation, by the thousands. Lean. Simple. Secure. Tuned for their specific purpose. This is a lot easier to do with Linux than an all purpose general use personal computing platform.
Hey now, I set all my servers admin passwords to my external IP address. Lean, simple… uh easy to find