That's the real problem: selling drugs works! Forming a cartel to produce and distribute addictive products, killing anyone who gets in your way? It's effective! You're never going to convince someone to stop killing people and dumping their bodies into culverts when they're making money. It's just not reasonable to expect that, or do anything about it.

Nuance: if someone actually bought the product 1 hour ago, it's fine. If not, it's fraud.