> let the free market do its thing
The problem with the free market is that there's no such thing. Every market is regulated to some degree, the state has its finger on the scales somewhere. It needs to for things that are are strategically important or for the welfare of the citizens. It can be subsidies for fuel, tariffs for some import, market abuse regulation, there's always a mechanism in place to keep things on a specific track. As much as the 4 year democratic cycle allows in specifying that track.
The free market suffers from the same weakness communism does. It relies on deeply flawed humans. The more flawed, the more likely they'll be the ones pulling the strings. And they'll tear apart the fabric of society to make more money.