Reading your comment I was struck by how similar this is to the War on Drugs. Drugs we find objectionable enough to ban and criminalize don't go away; they just

Reading your comment I was struck by how similar this is to the War on Drugs. Drugs we find objectionable enough to ban and criminalize don't go away; they just go to the next scarier place that will have them - which is to say, the next scarier dudes willing to risk supplying them - which is to say, actual criminals, who are almost always involved in other worse things than just supplying an agricultural commodity or extract thereof.