You assume 2 things:
a) Stern doesn't want the Spurs to win
b) if Stern hasn't hampered the Spurs progress, then he hasn't hampered any other team's progress
Re: a), I'm not so sure. In every story you need a good guy, and that's the Spurs, kind of the cinderella story of the small market team, nice players, charity, dedication, hard work and so on. That's 50% of American values. On the other side the Lakers, all bling, riches, spoiled, flashy, big market "one size fits all" franchise with loaded with superstars who don't mind making the headlines for no reason. That's the other 50% of American values.