Makes sense to be a socialist, when you're poor, and all. As the survivors gain their riches, they get more conservative - they have property to "defend" now. They were always self-serving people

Yeah wouldn't necessarily blame all this on people being ontologically "self-serving" from the beginning, thats liberal moralistic thinking. A shift towards cuckservativism its just an inevitable consequence of gaining wealth and property within a capitalist society. They weren't born selfish, they became selfish after years of indoctrination and falling into a position that strongly incentivises it.