Even if there was a market, any market naturally requires adversarial decision making in the negotiation of a deal to have economic calculation (what we generally view the benefit we derive from a market in the first place).

When the same people are making the ask as making the buy, you literally cannot decouple the decision-making in a way that objectively eliminates cooperation.

A market cannot exist when the entities involved abandon adversarial decision-making and cooperate. One's priority is always suborned by one or the other.