Except that American commerce isn't free of governmental control. Lobbyists add loopholes to benefit certain sectors and monopolies. Most American industries are oligopolies, and there's a revolving door between the public and private sectors, making the country increasingly plutocratic.

But I agree that governmental regulation isn't a panacea. Governments can err, just as markets can. Indeed, capitalist economies would destroy themselves with no governmental correction for their excesses.

https://www.investopedia.com/ask/answers/121514/what-are-some-current-examples-oligopolies.asp