I don't believe in conspiracy theories. I do believe in conspiracies. They usually involve intrigue among small power centers within organizations. But their reach doesn't extend very far outside their organization.
Humans want to believe that someone is in control. No one is in control. No imaginary Jehovah or Satan are in control. Hell, people can't even control themselves. You would need a large organization that would use up very expensive human resources to have significant control. People talk. The larger the organization the less likely they can accomplish anything significant and remain anonymous.
The only conspiracy is the conspiracy of our DNA. Our DNA needs us to be greedy and reproduce.
That's why capitalism is rampant and beats back socialism. People would rather surrender their safety net for the extremely slim possibility that they can become obscenely wealthy.
Conspiracies require a symbiotic relationship with those it wants to exploit. The wealthy parasites need to keep their hosts alive and replicating.
I do believe in Soylent Green. Nature is digesting everything and converting it back to food.