I do not understand this licensing thing.
A crypto based online casino or sportsbook should be free from licensing and all those centralized powers. We already have a community and it can starts from here. I have seen several gambling sites without a real license but established now. As long as you are providing good service and abide by community commonsense then a crypto based gambling site should be fine.
However as DS said, you can talk to some local lawyers or with any law firm online who has good reputation but never listen to user game-protect in here.
We are gamblers and we care on the reputation of the gambling site, but it will add to transparency and reputation of the gambling site if they have a license to operate, of course, you are investing your money, so it's just right that we know who will run after in case we win huge amount and we have problem, withdrawing it.