Believe it or not pro athletes want to be held accountable. This notion that managing the egos of millionaires is impossible because they’ll do what they want anyway is wrong.
These guys have spent quite literally their entire lives under the instruction of someone else. They thrive on being told what to do, having positive reinforcement when they do something right and being told when they are doing something wrong. Whether that’s in the weight room, analyzing swings, footwork on balls in play, etc. Their abilities don’t make them immune from criticism from superiors especially at the highest level. If that superior can’t hold them accountable then problems and bad habits will begin to surface.