This comment is born out of a superficial understanding of anthropology, altruism and selfishness.
Most of the coalitions you mentioned are, ultimately, born out of the realization that, sometimes, you have to give a little now, to gain more later. Even charity at its pure idealistic form requires the altruistic individual to feel they made the world better in their own view (psychic profit, thus ultimately selfish) to happen.
This isn't the "default capitalist view", this is praxeology, plain and simple.
Why people in the past cared for old, sick and disabled?