The domestic policy aspect of this trade, particularly for cocaine, is mostly speculation on my part, cobbled together from both historical accounts, anecdotal evidence, and personal experience.

However, my personal hypothesis is that a byproduct of the cocaine trade being illegal domestically is that it technically serves the same purpose as Jeffrey Epstein did, binding together members of an elite class through shared usage and performance of, what would outside of that class, be an illegal activity. Kind of like how people used to smoke weed to prove they were cool, before everyone and their mother got high all the time.

Cocaine usage is rampant among the financial and governmental class, and being ghouls, they have the best and most pure shit. Having a hit of flour with some cocaine in it is completely different than having the shit near raw. Basically isn't even worth it in the Midwest anymore, especially with some fiend's insistence of cutting with fent. But it also speaks to a tightening of access and usage. There used to be enough cocaine around for crack (differently processed cocaine) to be epidemic, but that shit is not nearly as common, to my understanding.

Point is, the systemic policies and policy objectives are the issue, not anything from the production side.