That decree had a kind of Darwinian effect: it scared off the weaker guys, leaving drug trafficking to the more resourceful guys who were less likely to get caught.
I believe that this is one of the reasons they declined in the drug trade because there wasnt enough men willing to go to the lengths the likes of demeo, gal ante or pitera would go to to protect it. Although theres one or two individuals or groups that will pop up every now and then, theres nothing of the likes of the east harlem purple gang or vincent papa.
