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My answer is that price controls have both an efficacy cost and a redistributional benefit (from the POV of the proponent of the control). Those who wish to prevent the efficiency cost need to come up with better ways to accomplish the redistribution. I have little sympathy with discussions of minimum wages that do not conclude discussing a wage subsidy.

I'd even argue that historically there were fewer ways to do things, so the cost of a price control was lower, there just being fewer "inefficient" configuration of resource allocations. A price control on grain during a Medieval crop failure just redistribute income w/o reducing availability of grain. Today it could prevent more grain from being grown elsewhere and transported to the area of famine.

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