Money, Propaganda, Tribalism, an undemocratic voting system...
Further, the uneveness of Power is gigantic: billionaires have way much power than common people, who are only powerful if together in large numbers and that's incredibly hard to make happen in a structured way with everybody aligned in the same way compared with what a single billionaire can do if they feel like spending $100 million, and the entire system is set up against people organising in such a way - notice how the biggest demonstration ever in the US, the George Floyd protests, achieved pretty much nothing at all, and the police in the US is still a force of Injustice rather than Justice.
The vast majority of people are either played like fiddles or made to feel impotent and hence just turn of from politics and just live day to day.
The US is not a Democracy.
There is an evil witch that lives underground in the Moon and who is mind-controlling non-Rightwing votes in the US so that they don't vote. Show me were I'm wrong.
The easiest thing in the World is to come up with a wild-ass theory without backing it with any evidence and then demanding others disprove it - I do believe that's even a 4chan special.