But if he hires another cook, he's paying the cook when he tells the cook his hours are, whether or not it turns out he actually needs the cook for all of those times. If he were consistently saturated, hiring another cook is a good idea, but if it's just saturation that lasts under an hour, congestion pricing is a better model than increasing capacity and losing a lot of money when he's not using the capacity.

Can't he hire another cook as a subcontractor and also pay him with an on-demand model?