The term capitalism was invented as a prejorative, and in its original meaning had nothing to do with free markets. Instead it referred to a system of oppression where industrialists partnered with the state to create an underclass of cheap labor. Various policies were used to impoverish peasants, force them off their traditional lands, and legally require them to get a job in a factory or face prison.
Something similar happening now is where only big tech companies are able to afford compliance with censorship, money laundering, and other state regulations. This allows big tech to abuse their relationships with their customers, who are a wide group of industrialists, consumers, and labor.
Criticism of capitalism is fundamentally criticism of the state.