Earlier quoted context omitted.
Our system is not a totally free market, we have consumer protection and antitrust regulations to avoid some of the possible negative outcomes there.
I don't really buy that consumer protection and antitrust regulations actually result in a better free market. I think the market is better off doing it's thing rather than a bunch of politicians trying to make it more efficient.
Definitionally regulations are a divergence from an ideal free market. Provably, under some conditions (which don't exist in the real world) a market will converge to some definition of efficiency. Practically, no politician cares about this.
Politicians aren't trying to make the market more efficient with regulations -- good politicians are trying to protect their constituents, bad ones are mostly trying to protect their donors.