Basketball in the inner city isn't just a game. It is the forum where men show their prowess before the girls. Like football in a southern town. Since it is about male prowess victory is individual, not team. It is about the flashy moves of black basketball (the slam dunk, the three point shot, the behind the back dribble).
It is about warriors vs soldiers.
That's all well and good for playing with friends. A game played between friends is very different from tournament sports though.