My evidence is extremely anecdotal, but generally speaking, the people I meet whi care more about other people make less money, and the people who care less about people make more money.

Children (at least in the US) are generally taught that “sharing is caring,” and yet you still see children who don’t share, along with children who do share. Regardless of this, though, I think that sharing is in our nature as humans, since what set humans apart from neanderthals is our comradery and need for socialization. There’s a reason that sociopathy is considered a disorder in our society (even though I think the term disorder is overused).

Genetic expressions can certainly change due to environmental factors, but only so much. There are probably a decent amount of people who were affected by capitalistic nurture into having more sociopathic tendencies (like, they were on some kind of line where it could’ve gone either way), but I also think that there are many people who regardless of nurture, still care about other people.

In a theoretical society that rewards caring about people, I think there would be a number of people who have purely selfish intentions who would do good things for other people purely to get ahead in life, just like those same people in capitalism would step on top of other people to get ahead in life. In this specific case, I think intentions speak more than actions.

Of course, intentions aren’t exactly something that can be measured, especially if people are dishonest about them.