Good points Fungo, I understand what you are asking.
Although most of our kids play with team mentality, they don't work their butts off for their HS or travel team, rather to MAKE the team and then be better than the next player to receive a college scholarship or get drafted. They don't showcase, play tournaments where scouts and coaches come for any other reason than to be recognized to move forward. These are not based on team goals but personal ones.
When one enters college, although most guaranteed a spot on the roster, they have to work hard to make that starting position while buying into the strong team concept that exists in college baseball that it's all about the team and winning. Part of what college coaches look for are those that gel with others to make up good team chemistry, because we all know that helps win games. Your job in college sis to be responsible, make good decisions, get good grades because you were chosen for a specific reason, which was to help the team win. If you do not do that you are considered not a good team player.
I know that right now my son isn't in the gym everyday so whatever team he will be on will be a winning team, he is doing the same thing everyone else does only on a different level, working hard to make a team and work towards his personal goal which is to eventually make the bigger team.
This is a sport based on team mentality, working together. It is your job to be a part of the team when you make it and do your best, because winning brings rewards, but in reality, there is a whole lot of "me" going on.