We'll just conveniently ignore the costs of retraining users and of replacing any legacy systems they may use. Ooh look, shiny Linux!
You can disagree with the utility of having that control yourself vs having it controlled by your supplier. If people here believe that utility to be not worthwhile from their direct experience - that's something I'd really like to hear because I'd likely learn something from it.
I'm not sure I learn much from your response.
A linux binary from 20 years ago is just not going to start. Even the basic libc wouldn't be there.