As little as 50 years ago, selling these drugs wasn't illegal in the US. Look how far we've come.
I think people in power realized that the counter culture of the 60s and 70s posed a real threat to a capitalistic society, so they eliminated factors that could give people the idea their life purpose was not to be a drone in a large corporation.
AFAICT when people came down from whatever it was and actually tried to live their 'new' ways, they pretty much degenerated and fell apart after short times for all sorts of reasons.
Being a corporate drone is not an aspiration. Feeding your family and having a nice place for them to live certainly is though.