Interesting post. It definitely got me thinking. I would differ in saying that the tribal socities were not socialism or even like socialism. In the tribal system, everyone had a role to fulfill for the survival of the group, so the meat was gladly shared with the rest by the hunter because the others in the tribe did things for him or her too. Socialism and communism only work in our world when a central authority takes from the successful members and gives the products of their work to others.
Also, I don't think greed, excessive self-centeredness or hoarding, is good, but individualism is important. That's what gives each human life value and meaning and what produces great art and innovation. Even in tribal society, there was room for self-development and competition between individuals. That's what brings out the best in us, I believe. Would you disagree?
As I said here
You are right. The social dynamic of early settlement is very different from socialism as we know it today. It was but my lack of better wording. I would say It was socialism or communism in the most primitive form.
And I agree Individualism is also very good and widely acceptable when the Individual does something innovative and good for the rest of society.
If an individual does something for selfish reasons that affects the rest of the society negatively, I'm sure it would be shunned and judged negatively