Isn't that exactly the comparison being made? A "10x" engineer can build a cathedral alone that does what you would otherwise have to hire a whole bazaar of engineers to replicate, at much higher cost.

(Pedantry: You're actually confused on the metaphor here. The Cathedral and the Bazaar was about development methodology, not individual performance. In fact a centralized, corporate product like chess.com would almost certainly be labelled a "Cathedral" by ESR. A "bazaar" is a project built of high-value individual contributions regardless of origin. Whether lichess qualifies or not, I don't know.)