This has everything to do with centralization, just not with the one small context for it which you picked.
With real decentralization in place market mechanisms work.
Monopoly situations along with market mechanisms invariably result in centralization (“monopoly” comes from the Greek word for “right of exclusive sale”), hence market mechanism won’t “work” in the sense you mean it in such a scenario, as I explained.
Your argument is circular because it’s like saying that it will work as long as it creates the conditions to make itself work (which is the same as saying “as long as it works”).
Monopoly situations along with market mechanisms invariably result in centralization (“monopoly” comes from the Greek word for “right of exclusive sale”), hence market mechanism won’t “work” in the sense you mean it in such a scenario, as I explained.
Your argument is circular because it’s like saying that it will work as long as it creates the conditions to make itself work (which is the same as saying “as long as it works”).