Is there somewhere in modern society this schedule is available?
Spending your time fighting for limited resources is actually not something we stopped doing. If you live in the US on average around 4% of your working time is spent on war, and that's working more than twice the hours, all things considered, of people in the neolithic. And that's in relative peace time, expect that to revert to the mean in the next decade or two.
Anyways, this is besides the point, the natural state of man is indeed to do less labour and even less work than nowadays.
Apparently, humans would tend to migrate rather than fight for available resources.
You could go live a hunter gatherer lifestyle in most forests in North America. Nobody will try to stop you if you are far enough from a road.
What about modern life has anything to do with this mythical "natural" state? Why should people be left to die as if we were the same as gazelles?