Tarheel said" Look at a football team. Is it the quarterbacks job to catch the lineman breaking curfew? No, it is the coach, and there is necessarily a wall there between the coach and the players, even though they are all on the same "team". The same is true for quality, they have to be part of the team, but they also have to police the team, and that builds barriers, like it or not.
Tarheel, I understand your point. I could argue, if I were in the mood to argue, that if the QB is truly one of the team leaders both on and off the field (beyond his title of leadership on the field), and the team was dedicated to winning, he just might consider it part of his "job" to bust the lineman's butt for breaking curfew. His "penalty" may be different than the coaches, though. I think I have heard of "team leaders" on pro and amateur baseball and football teams doing just such things -- kinda handling things on their own even for off-the field stuff. Heck, I know I have seen it even in high school and lower levels! Any coaches or players in here to add anything?
But I agree it is not possible in every culture.