Free market produces Oligopolies, monopolies, cartels and collusion. They are perfectly absolutely natural formations. FAANH Companies form anti-poaching agreements, now they suddenly all have layoffs at the same time, you think that’s a coincidence? Even drug cartels divide up territories instead of ‘competing’.
You conflated two different uses of the word "free market" - one which is correctly described as "laissez-faire", and the other one, which is the one that everyone actually uses (including gazpacho, the user you were responding to). With very few exceptions, nobody on HN argues for laissez-faire capitalism - and "Oligopolies, monopolies, cartels and collusion" only happens in laissez-faire capitalism. In other words, you made a strawman argument.