Can you give an example which licensed casino in this casino turn become scam and then the owner of that's casino go to jail? I believe you can't give me at least one example since you can't find it and you have no way to give me a proof.
Curacao license is really pointless if you think the casino will not become scam and the authority will take legal action against the casino. There's no rule where the Curacao license has such responsibility, it's really different with a license in land based casino with ID verification.
Maybe the Curacao license is formal, but a licensed casino must comply with at least some regulatory requirements that protect the rights of players. And licensed casinos live much longer than non-licensed ones.