Most markets inherently turn non-free when left unsupervised. That's the insight that folks like Keynes came to (as does any honest, informed observer with two or more functioning brain cells). That's why anti-trust and competition-preserving regulators and laws are essential. Without them, a very few powerful players form [0] cartels and/or tri/du/monopolies and enrich themselves vastly out of proportion with the value that they provide to their customers.
[0] ...often legally protected...
No they don’t. What happens is that people want to manipulate the market for a variety of reasons, so they do that, and then really really smart people come along later and try to claim that those manipulators weren’t actually the problem but the solution! It is completely backwards, like reversing cause and effect. It’s like blaming a person for standing in the path of a bullet instead of the one firing the gun.
Want a free market? Stop messing with it.
There won’t be anti-trust as long as elections can be bought and there’s a revolving door between regulators and industry. We need a firewall to separate capital and state.