> Other than the exchange point, which private exchanges for cash can circumvent "private exchanges for cash" (that really would have to happen in person) will

> Other than the exchange point, which private exchanges for cash can circumvent "private exchanges for cash" (that really would have to happen in person) will never, ever, replace the scale at which an online exchange that can deposit money straight to a bank account will. The goal of a "crackdown" is never to eliminate something 100% (because as you noted, that is impossible).