I think that, little by little, they’ll be subject to more and more restrictions, and the day will come when they no longer offer a competitive advantage: right now, they can offer lower house edge and more promotions because they pay less in taxes, and they tolerate certain limits without KYC, but I think that in the future, casinos will be hybrid (fiat-crypto) and will require you to complete KYC before making your first deposit.
You're forgetting one major source of money!
Casually and randomly scamming users and denying wins because they know the user can;t do shit about it since he is either breaking the law in his own country of his funds are "dirty" enough that he has no proof of where he got them from.
And if you deny one jackpot in a hundred youre better off with a few percentages in house edge than any casino, crypto, or fiat!
This is one of the actual reasons crypto casinos with Mohito and Bananarama licenses thrive: no consequences if they wrong the players.