That's actually a somewhat amusing thought, a vast, worldwide conspiracy to oppress and control, the reason they do it is because that's what they were trained to do when they joined the conspiracy, but no one remembers why, it's just what they've ALWAYS done. I can see a movie where the hero confronts the head of the conspiracy and demands to know why and the villain explains how, then the hero demands to know WHY again, and the villain looks confused "I'm not certain what you mean, there always needs to someone in control of the government, I mean, how ELSE would things be?"