To answer dodger, I am saying if we were back in the earlier years, and government was never made.
Alright, got you kinda
There is still a few reasons why it still wouldn't work:
1. Humans are naturally greedy and conflicting bastards. Sharing land and resources isn't easy. Even in early times when there were more of those things, empires still went to war.
2. People will naturally follow the strongest and smartest people who naturally form some type of organized system of ruling both politically and economically similar to a government.
3. Advancement of technology requires both centralized resources and an economy. More people requires better technology for stuff like farming, defense, power, communication, transportation, etc. and with no economy we wouldn't even really have items like computers most likely.