@NEETzsche
Drugs are a market so mature, that people are manufacturing their own submarines. So, I agree with you there.
But... If you have 0 shame though, there is this thing, that isn't even crime by itself...
https://m.youtube.com/watch?v=GfrHOz1FwpU
Gurus are the modern equivalent. They sell curses for generating wealth, and the generated wealth is proof, that they know what they're talking about.
My favorite part? They do tend to talk about REAL economical/psychological principles in the free recruiting phase, actually spreading some important knowledge. But yeah, once a person starts buying, it's just a cult made to drain people.
And, thanks to Andrew Tate, this scheme might die soon too, but now, it's still alive and working.