But we undergo a great deal of brainwashing. Unions are demonized, billionaires lionized, puritanical (insane) work ethic lauded, anything less than that vilified, etc.
Attempts at unionization are aggressively subverted and crushed by large corpos.
And most people are given just enough to not want to risk it all to get a bit more.
It will be a while, yet, before US culture shifts enough that more people side with unions, join unions, and build critical mass. Although, younger generations seem to be more aware of the anti-labor BS more than my gen (x) was at a similar age.