Hmm... serious process of legalization and regulation of the gambling markets started relatively recently, so no wonder that some sportsbooks/casinos had no licence and could work like that. And nowadays, even though they all can cheat players, I still prefer to play at licensed casinos/sportsbooks.
I'm the complete opposite. I only play at crypto casinos and sportsbooks, and I think only 1 of them is licensed, or maybe not at all (I can't really be bothered). Have I been cheated at casinos? Yes. Have they been licensed? Yup! And did the license help me when I tried to claim my funds? Good luck, they never helped me.
Trust in crypto is a strange thing. Like on this forum, you can trust DT1 members... but it still doesn't guarantee anything. Same as crypto casinos. They can work well for 5 years and scam one day. Just to be safe, gamble, withdraw, and be done.