If Apple was in the high-end server market, I see no reason why the company I was working for would not be running macOS on Apple hardware as servers, instead of the fleet of Linux based servers they had.
Despite how easy Apple makes it, nobody is really using Macs as a server in production. Apple[0] is not using them as a server in production. They would need a radically different strategy to replace Linux, because their efforts on macOS still haven't replaced Windows.
[0] https://9to5mac.com/2026/03/02/some-apple-ai-servers-are-rep...