I wonder if the “out of steam” phenomenon is due to just aging out without sufficient replacement rates of equally creative people. E.g. 70s SF had a lot of 20-

I wonder if the “out of steam” phenomenon is due to just aging out without sufficient replacement rates of equally creative people. E.g. 70s SF had a lot of 20-30 year old hippie boomers. By the 90s many had cut their hair and started having kids and probably a lack of desire to drop acid in the park in their 40s and 50s.