We are speaking largely past each other. Capitalism was not a choice, it emerged naturally from mercantilism and early industrial manufacturing within the boundaries of feudalism. It was never a choice to adopt it, it arose naturally as it subsumed everything else, extending the domain of private property.

The utility of Liberalism is in its ability to affirm existing property relations. This is pressed down by the state, and additionally the large corporations. This is called "cultural hegemony," capitalism is maintained by the ideological superstructure.

Corporations, individual capitalists, etc did not choose capitalism, correct. They are the best at gathering profits. Capitalism as a system selects for them, because capital is a control system, if you fail to compete you fall.

Power is only useful as far as it increases profits, because profits are what is systemically driven. Humans are not in control of capitalism, capital is.