What's the sense in making companies more efficient, harder to disrupt and putting them in a position to create a monopoly as they become larger ?
Ergo, the idea that the market handles their duties more efficiently is a lie. It has nothing to do with corporate vs state owned enterprise, but a matter of complexity.
Sadly culture in the US is diluted into believing that profit motive is a silver bullet that fixes all problems. And many are raised in religions that teach one to deny critical thinking, embrace appeals to authority, and love confirmation bias.