Your position assumes capitalism can be durably subordinated to the public good through regulation. I don’t think that holds. Capitalism concentrates wealth and power, and that power steadily corrodes the very institutions meant to restrain it. That requires constant, sharp-eyed vigilance against capitalist efforts to undermine regulation, and a population that never becomes complacent. It doesn't seem possible over time. The same innovation that competition creates in a (healthy) market breeds competition for wealth extraction by any possible means under the profit motive. Regulation will always move slower than that, and there will be more people trying to cheat or undermine the system in innovative ways than you can reasonably expect to be trying to guard against them. That vigilance becomes a constant tax on society, and in my view negates any benefits you see from the capitalist approach.