Psilocybin from E-coli? Impressive. Though I'm not sure what to think of the statement that growing it in mushroom form would require extensive real-estate and time. I mean, I used to grow it in jars on my shelf. I was a complete novice to it, following only instructional YouTube videos, with limited time and very little space. Within only a month I had more mushrooms that I could ever want to eat, so I was playing Santa Claus with it. Just imagine how much of it I could grow if I did it full-time, dedicating the entire studio apartment for it. Now applying the same thing to a warehouse... you could probably supply an entire city with psilocybin.
By the way, what I find super fascinating about psilocybin research is not only how it can be helped for mental disorders, but also such things as alcoholism (and other substance abuse / dependency), violence, lying, cheating, and other types of behavior deemed "antisocial". This also explains why it has been treated as a controlled substance by those who are not interested in people being socially responsible (such as the pharma industry, among others).