Earlier quoted context omitted.
"popular does not make something a monopoly" I didn't say that, though, or anything like that. I did mention market share dominance. But that's often related to things like "A firm is a monopolist if it can profitably raise prices substantially above the competitive level." .
>In short, dominant market share in web search. https://news.ycombinator.com/item?id=27440321#27443928
"may be inferred from a firm's possesion of a dominant share of a relevant market that is protected by entry barriers"
Arguably I left out "protected by entry barriers", but that seems obvious for search.