Capitalism has a deep-seated taboo against taking recreational drugs. So strong is the taboo they will ruin your life and exile you from mainstream society for doing something recreational.
This is changing a bit as the scientists tell them there is basically no reason for this. But the scientists meet with resistance from entrenched cops, judges, lawyers, who are very 
about it.
What's the materialist explanation for this moralistic taboo?
Nick Land would like a word. So would Steve Jobs if he wasn't fucking dead.
Also, I don't think mushrooms or other psychedelics are like some Game Genie "be a better person" code for human brains. They can help, yes, but plugging them into billionaires (which they often do on their own) hasn't demonstratably done much to meaningfully change their behavior.