Players want to play for the Lakers (and Celtics), for the same reason guys in other sports want to play for the Cowboys or the Yankees. They want to play for a storied franchise, that always has at least a shot of winning it all, while being in the spotlight. Do you think guys really grew-up saying "I want to be a Raptor.", or "Some day I want to play for Memphis."? For some players it's about winning, for others it's about money, but for some it's about the experience. Those players will always chose the Lakers, if the Lakers give them the chance.