Comment by MostlyStable

You don't see a discrepancy between your claim that free markets have nothing to do with high barriers to entry and your own link claiming free markets require free entrance to the market?

And no, it is not specifically referring to government related barriers, although those certainly count. Government is very often the thing that generates barriers to entry, but it is by no means the only barrier to entry. Any barrier to entry is, from a strict theoretical sense, a departure from a pure free market, although that's more in the "spherical cow" sense of the idea.