OP,
I would suggest reading Mason's Poker Essays, where he discusses this and other similarly interesting topics comparing different games. The above post is pretty good.
For games to run, they require players. The most important players to the health of the games are bad players. If they are in a game, the good players will come. If they aren't, then the good players will leave, looking for games elsewhere. (It is also the case that if good players have little edge over bad players then they will move on, but in LHE and capped buyin NL this is far from the case)
In NLHE, especially deep stack, the good players have a HUGE edge over the bad players. This results in very few winning sessions for the bad players. If they virtually never win, they won't play. In fact I agree with Mason, that if casinos go to unrestricted buyin NL cash games, they will dry up.
Limit games are unlikely to die out because bad players win often enough.
Also, you should see Mason's discussion
in the publisher's note of the magazine. Note: link may change, you want the December issue.