The books would at most accept not taking action on the Vegas team's games. I can't see them letting anything else go. After all part of the reason why a team has never made it is that the close-minded casino heads think that a sports team is competition for their product. In a way they are right, entertainment dollars must go somewhere, but they miss the point about the innumerable advertising draw it gives, not to mention extra incremental visitation.
I still maintain that the NHL is the league that should start out in Vegas. Hockey in a good stadium and with no other sports teams to compete with to start out would do very well, it is the one sport that just depends on die hard fans more than a large population base. TV revenues aren't even an issue and the gambling issue is meaningless. I don't think the NHL could say no, they already give the ok to state sponsored betting in Canada using the NHL games. Add to that if they really did insist on getting rid of the betting, the books surely wouldn't fight it. I don't think baseball or football would ever make it too well, not enough people around to support it, especially when it comes to TV dollars. NBA is a marginal prospect at best, too many teams out there playing to half-full stadiums. NHL has a much better record with getting support in all but a couple of cities where it doesn't really belong. If you want a successful model, just look at Phoenix. The stadium until the new one is just horrible for hockey and there hasn't been a real good team their whole stay there. Yet they got a new stadium built and projections are for very good crowds. It helps that they have about 1.5 million more people, but they have such tough sports competition there I think a lone team in Vegas would do very well as long as it had decent owners and didn't have another sports team coming in a year or two after it started.