People are broken. We always try to make a buck on the cost of others. Socialism works within a family. Capitalism is a spinoff of individualism and competition.

Chimps know that you don't turn your back on your lunch while amongst friends.

Another thing about chimps. Whenever a group gets too large, 12-20 individuals, fractions form and the group "decides", with attitude and bullying, who is going to leave.

Even small city states governments need different kinds of tricks to maintain coherency in their society.

Gang affiliation, murder, theft and rape are natural impulses amongst primates and multi million people societies are just incomprehensible as part of your own social group. The social norms that apply to you and your peers, within your own group, is not transferred, in your head, to the greater society. There is always elements of deamonising the unfamiliar.

So we need philosophical, ideological or relegious ideals to overcome our genetically evolved social limitations if we want to exist in large societies. So every time politicians demonise an ethnic or social group or a foregin country, it appeals to our monkey genes, but breaks your illusion of being part of a larger tolerant community. Capitalism is not an ideology it's animal instinct. So talking about capitalism alone being a benefit to society is a contradiction; the politician that say that he will nurse your persuit of happiness on behalf of others is, besides being untrustworthy, undermining the sense or illusion of fairness that is nessecary for a society to function. If he lives what he speaks, he is really just trying to make a living out of your vote anyway.

Adam Smith, the arch capitalist that is cited at the start of a lot of economics publications, was quite convinced that unregulated markets without government intervention, would undermine the state economically and socially and lead to more suffering of the poor. (Thats not something that's cited very often).