How so? To be clear, I'm talking about economic power, not state power.
Those who gain economic power through free markets eventually take over. Hence, robber barons followed by Wall Street and the Fed, etc.
All of them? Huh? What do you mean 'take over'?
take over - definition of take over by The Free Dictionary
Hence, deregulation from the '80s onward, increased military spending and profits from conflict while keeping the petrodollar propped up, bailouts, and consumer spending.
You can't have de-regulation without first having regulation. You're simply pointing out the very real dangers of government economic manipulation.
Free market capitalism requires regulation, as increasing complexities, the notion of private property, and other measures towards limited liability involves legal issues. That's why robber barons worked hand-in-hand with government. After that, industrialists and financiers take over, which is exactly what happened, starting with control of money supply by commercial banks, followed by deregulation leading to trillions of dollars in unregulated derivatives.