I'm not talking about credit card fraud. Drug dealer has cash, drug dealer buys Steam gift cards from local 7-11 (or physical stores that carry them) and uses

I'm not talking about credit card fraud. Drug dealer has cash, drug dealer buys Steam gift cards from local 7-11 (or physical stores that carry them) and uses it to load into Steam. Steam has a marketplace, dealer buys hats/skins and then sells them for real money transferred by paypal e.t.c. via the various 3rd party sites that do that kind of thing. Cash is now converted to money in a bank account without ever going into a bank itself.