"open market laissez-faire capitalism" was the explicit policy goal for maybe 50 years.
The idea that if it was only somehow more pure in some ideological virtue, then it would have worked, you'll need really hard historical material empirical evidence to defend such a claim
Not that it wasn't white and pure enough but that if it was the shade whiter you advocate for, it would have somehow been a complete 180°, like some magical threshold
Pretty much, I'm naturally cynical about any waving about of either "Capitalism" or "Communism" as neither has really existed in any pure form and the devil is always in the details.
That, and the propensity of those who seek power to dangle whatever shiny utopia best suits their end of fooling the masses.
The US drifted far from any form of pure open market laissez-faire capitalism or balanced regulated capitalism some time past.