I think the point of this is that gambling would be legalized in all forms, not just limited to vegas, which it is currently limited to by the Supreme Court. Meaning that you can more bet online/in other states which would probably affect pricing with competition. That being said, I would imagine the vig would go up if they have to pay it off to regulation.

And yeah, you'd get taxed, so off-book gambling I'm sure would stick around, although the $6 bil estimate is legal....who knows how big off shore and other forms are right now already.