1. Own property.
2. Borrow big bag of cash from Bad Guy.
3. Gamble or spend the cash.
4. Pay back the loan from clean sources.
I understand it, but I guess I have never dealt with the KYC people at a casino. I still see obvious choke points (for the conversion of drug-laden currency into gambling chips, for instance) at which Explanations Must Be Made, but perhaps there are channels that I do not know about.
Let’s just say my experiences with the KYC systems have been rigorous.