This is a ridiculous oversimplification of complex historical processes. The biggest change to power relations by far were the bourgeois revolutions, which ostensibly shifted "political/bureaucratic" interests to "moneyed interests," which is quite literally the opposite of what you're saying. At any rate, the dichotomy is completely misleading since "moneyed" interests and "political/bureaucratic" interests are not at all mutually exclusive; in reality, they are virtually synonymous within the capitalist system. Also the notion that "moneyed" interests do not possess the power of state coercion must be some kind of perverse joke. Do you not even have a cursory knowledge of history? There are so many instances of money equating to state coercion that it's mind boggling anyone would say this with a straight face. Do you not know what a pinkerton is? Are you not paying attention to what the current president is doing both domestically and overseas? The idea that any advocate of capitalism would get on their high horse and moralize about Marxism is pathetic.

How is the government worse than the corporation or billionaire for coercion?

Libertarians always try to convince us that the corporate boot tastes so much better than the governmental one, but they both taste like leather to me and I at least have a say, however small, on the government.