I think Backgammon has a place for sure, but i also expect Baccarat to be the next “fad”. And bingo. If i’ve learned nothing from my time in the music industry its that things come and go and cycle round like a big roundabout.
Poker today, Backgammon tomorrow, Roulette, Baccarat, Bingo…they’ll probably all get their turn in the spotlight before doing a “dot com”. Then we’ll go round again revisiting Poker etc in a 10/20/30-year cycle. People will invest, make loads, go under, resurface, reinvest. Its how industries like this work…its how they have to work. You’ll be lucky to see one Poker TV channel running in 2 years time, yet alone the 4 or 5 we have now on Sky. But there will probably be the “Bingo Channel” to watch or “Baccarat TV” 
Unlike the music industry in which Radio is what decides the next fad, I believe online gambling will be driven by the marketeer with the most money and the most clout at any one given time. That might be a Partygaming or a Virgin. It depends who can reach and manipulate the public mindset the best.
Cheers
Simmo!