Resource scarcity brings those behaviors back regardless of the cultural distance from those times it seems.
Discussion
I don't think it's scarcity so much as a lack of ability to coordinate. Scarcity doesn't help tho.
The current state likely isn’t abject scarcity, and hopefully it never will be because as the degree of scarcity increases, the behavioral guidance from enculturation and social mores melts away. A person can see it in stressed animal populations, and well, at the end of the day, we’re just monkeys with lots of intellectual dressage.