And you would be wrong if it weren't for your parenthetical hedge. Using Betable, it's completely legal for any developer to offer real money gambling in their games to any players who are not in the US and a few other minor jurisdictions (in terms of market size).

It's a big world out there. In fact, the market out side of the US is huge. Even Zynga has more players outside of the US than inside of the US (60% Ex-US). The opportunity to go into the Ex-US market where one can make 300X more ARPU/month than in the US is massive.

Also, one thing rabble didn't mention is that Betable handles all gambling aspects of the code and financials, so US developers can legally integrate with Betable, and we just make sure that their player is not permitted to gamble if the player reside in the US (in which case, they could be taken to a virtual goods equivalent or some other flow).

It is illegal for US players to do real money gambling. But the world is big and the there are other markets. As long as the US players are prevented from playing the US doesn't care that it happens elsewhere.