Everyone also wipes their butts. But that doesn’t mean we need Departments of Butt Wiping and tenured professors who have spent their whole life time studying techniques of butt wiping.
If everyone does it (and often multiple times a day to boot) then there's actual material improvements to the human condition that could be identified and implemented. That improvement requires study, rigor, and people who stand to materially benefit for conducting that study. You'd generally end up in a university-like framework for that study (even private research is structured similar to university research, with some key differences).