Earlier quoted context omitted.
Hoarding during scarcity is quite a sensible strategy, you want to get through the winter season or drought. What we don't seem able to do is turn that off in an environment of abundance. We can't seem to get past that evolutionary adaptation and it isn't doing us any good.
Some people are genetically greedier than others and greedier people are much more likely to get into positions of power. To make matters worse, people tend to like people who are like them. So greedy people help other greedy people. This means that power and money becomes concentrated in the hands of the greedy.
That's a pretty bold claim that I am coming across for the first time. I did not know greed has its roots in genetics. Can you cite some references? I would love to read more about this.