That makes no sense. How is our economic system highly controlled in the US? Corporations run rampant, with scant regulation compared to some places like Europe.

Economic systems and Political systems do not exist independent of each other. They are intertwined.

A government's size being big doesn't instantly equal less capitalism if that government doesn't do as much as it could to reel in corporate interests.

Sure, that's not what I am talking about. Capitalism cannot exist without a state to verify Private Property rights.

Case in point, our government here in the US is big but is controlled by corporate interests to such a degree that despite knowing about human made climate change since the late 60s, basically nothing has actually been done about it. Or how whenever there is any push for even a public option to live alongside private insurance, insurance companies go into overdrive running ads and paying politicians to push back against it so it never gets brought up after an election season.

Again, my point is that stateless Capitalism does not and cannot exist.