Why is a casino's license significant to you when you want to gamble with bitcoin? I don't think that bitcoin casinos take steps towards being licensed. Provably fair gambling is the way to go. As of the legality, in most regions and countries it isn't illegal to gamble with bitcoin because of the lack of laws about it. Until this changes, we're probably not going to see many bitcoin casinos being blocked.
Ideally to have a successful casino you want to have implemented fiat deposits, because most of the money is still in fiat form today, but that's when fincen nightmare and all the regulations begin.
If you have an exclusive Bitcoin + alts casino, with no possible interaction with any fiat, then I don't think they can do nothing about it, specially if you host it in "grey area island" type of place.