A game can't survive if it's only fun if you are good. Good is relative, and by definition, most of the playerbase cannot be good at any given time. If the game is only fun if you are good, the bad players just quit. Now, what is bad shifts to being the people at the bottom end of the new skill gradient. And they quit. And so on... Or, to put it another - getting good is an individual solution to a systematic problem. It can make a bad game fun (at least for you), but it can't ever make a bad game [i]good[/i].