From [1]: “economic elites and organized groups representing business interests have substantial independent impacts on U.S. government policy, while mass-based interest groups and average citizens have little or no independent influence.”

And "The bigger spender wins congressional races 91 percent of the time" [2].

But if that's not credible enough for you maybe go see the speech by President Eisenhower [3].

Don't you remember the "weapons of mass destruction" in Iraq?

There are so many examples that I have no idea how you think this is a conspiracy theory. There is no need for that, people just act on their perceived best interest, and when you have the top ~1000 people controlling almost every asset, isn't it obvious that they will dictate the course of history?

[1] - https://www.washingtonpost.com/news/monkey-cage/wp/2014/04/0...

[2] - https://www.vox.com/2014/10/27/7077647/midterms-spending-mon...

[3] - https://www.history.com/this-day-in-history/eisenhower-warns...