1. I think it depends on how you define "superstar".
Do the Celtics have no superstars, or four? Quite a few different teams have won a title in the last decade. Which is it - did they win with, or without, superstars? How about the Knicks? Does winning a title validate superstar status? I think your faulty premise that only a very few teams will ever have a superstar invalidates your question.
Our government... teaches the whole people by its example. If the government becomes the lawbreaker, it breeds contempt for law; it invites every man to become a law unto himself; it invites anarchy. Louis D. Brandeis