This is WalterBright's operative definition of a monopoly[0], and I'd agree that he's being either deliberately obtuse (perhaps via ideology?) or is misrepresenting history (perhaps also via ideology?).
I'm honestly fine with whatever definitions, but they need to be able to cross the chasm from concept to criterion in conjunction or disjunction to be useful as a means of discriminating. So far, Walter's proposed definitions for monopolies and free markets together fail this test even if they're separately some measure of fine, inaccuracies relative to their term-of-art counterparts notwithstanding.
I'm honestly fine with whatever definitions, but they need to be able to cross the chasm from concept to criterion in conjunction or disjunction to be useful as a means of discriminating. So far, Walter's proposed definitions for monopolies and free markets together fail this test even if they're separately some measure of fine, inaccuracies relative to their term-of-art counterparts notwithstanding.
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0: https://news.ycombinator.com/item?id=49617983