To me it feels like their most rapid period of innovation was post World War II as the population was growing very rapidly.
Often easier to consider this in terms of competitive sports, though you could check seshatdb or something to see if it holds at scale. For example, YouTube really changed a lot with sports.
Honestly, population growth has, if anything, correlated to increasingly equal and egalitarian societies.
> has, if anything, correlated
This phrasing is delicate. Correlated, but likely not caused by nor a cause of. Just two things that happened in parallel.To be clear, I am agreeing with you.