There are 2 big organizations that run the business, but I doubt they are involved as this just doesn't sound like a business they would do. I don't think there is much of a problem running a book down there from a operating standpoint, if they have licenses and they aren't terribly difficult to get, but aren't cheap. There are no laws against accepting foreign bets, they just haven't done it to avoid problems since the sports betting is almost exclusively a gringo thing, Mexicans bet on horse racing 95% of the time at these books.
I can't see the reason why you would do it. The costs are high, there is no regulation or expertise there either. CR or Belize are much cheaper operating environments, this all makes no sense to me.