Feudalism existed for centuries until it fell to capitalism.
Prior to WW2 there was a strong labor movement in the US. There was a reason the US was paranoid about communists. Abraham Lincoln was basically a Marxist in this sense [1][2]. That's how far right things have shifted, particularly since Ronald Reagan.
The Red Scare dstroyed any sense of class consciousness people had and neoliberalism ran wild. This doesn't happen overnight.
[1]: https://www.cooperative-individualism.org/lincoln-abraham_on...
[2]: https://www.openculture.com/2022/01/how-karl-marx-influenced...