A lot of process and management is about dealing with low performers - by which I don’t mean incompetent people but people lacking motivation, or with the wrong intuitions, etc. Our hiring process can’t reliably filter out low performers, and when they get in it’s difficult to fire them, so we invent ways to raise the bottom line through processes.

And FWIW I don’t think you can solve this by always hiring the “best” either, at least not beyond a certain team size.