By OOC regulation I mean that more then 1 crew has access to the weapons/drugs/whatever scheme, so they don't have the monopoly this way. If more crews are gonna sell 'to the public,' they'll try to compete on the market and .... You've got the image, I suppose... But I believe that's not gonna be a problem really.
What might be a trouble is if all the crews with access to one of those rackets form some sort of alliance, and sell way over reasonable price, and that's when I'd feel like having some OOC intervention might be in place. Or maybe it's clear IC stuff? I dunno really how to eventually act up on that... I just know that on some smaller communities this sometimes was a problem...