The industry will never see the growth that it did in the last 4 years (at least, not in North America). Everyone who wanted to try it has at least downloaded a game or two and tried their hand at play or real cash.

The next hurdle (or speed bump) is the law. If the game becomes more legalized in the states, you'll see a new rush by big name companies to get in on the game. If the powers that be decided to clamp down on online gambling, then you'll see a bigger slowdown.

As it stands now, the industry could stand to shed about 140 sites and lower its blood pressure a bit. =)