So historically, good poker player follow the bad players. But the popularity of games seems to change over time. From Limit Holdem to NL, then Omaha, HORSE, etc.

So my question is, what causes the shift from game to game? It doesn't seem the good players would be the ones instigating the popularity shift since they want to stay wherever the fish are, so what causes the bad players to take up a new game?

Or am I way off here?