Take a look at what happened in the 1960's -- a period massively influenced by psychedelics. Our current society is still benefiting from that influence today, including the birth of the environmental movement, the massive influence of psychedelics on music and the arts, etc. Psychedelics also influenced politics in that day, which we all know was very turbulent and radical then.
So the entire culture doesn't have to be overhauled to have a massive influence. During and after the 60's there was a backlash against the counterculture -- a backlash that was ultimately very effective in some ways, and one which continues today, but I do believe a lot of people will start to once again see that another way is possible once psychedelic use becomes more widespread and mainstream. That potential is one of the few things that gives me a sliver of hope about humanity's future.
So the entire culture doesn't have to be overhauled to have a massive influence. During and after the 60's there was a backlash against the counterculture -- a backlash that was ultimately very effective in some ways, and one which continues today, but I do believe a lot of people will start to once again see that another way is possible once psychedelic use becomes more widespread and mainstream. That potential is one of the few things that gives me a sliver of hope about humanity's future.