If you quadruple the price of something, people are going to buy less of it. But, unfortunately, the way we bring about that quadrupling of price is by increasing the cost of supplying drugs. The amount of money people are spending on drugs is actually higher than it would be if the price were lower, because the demand for drugs is not very elastic.

Region: You’ve shifted the supply curve, and moved up the demand curve.

Murphy: Exactly. So think about a simple world where the elasticity of demand is about a half. You quadruple the price of drugs, and the quantity of drugs is cut in half. So you’ve got four times the price, half the quantity. You’ve doubled expenditures. People are spending twice as much and consuming half as much.

Well, where did that added expenditure go? It goes to the drug dealers. It doesn’t go to the government; it doesn’t stay with the consumers. It goes to drug dealers. And that revenue actually finances the supply of drugs and finances the drug lords who supply drugs to the United States. So what we’ve really done in this case is financed the people who are on the other side of the War on Drugs. So, the War on Drugs, in our view, has been kind of doomed by its basic economics. That is, the harder you fight the war, the higher you push up the price. The higher the price, the higher the revenue of suppliers; the higher the price, the greater the incentive to supply drugs to the United States.

Now, what are the costs to the suppliers? Well, they have to avoid detection. They fight over turf for drug territories. They pay people off. They may go to prison. All those costs are pretty much bad things. They use violence to enforce their contracts and the like. Not a good outcome.

But when you put people in prison, you have to consider not only does it cost society in the form of people in prison who could otherwise be gainfully employed, but it also costs us money to put them there. So for every dollar of cost we impose on the drug suppliers, we spend at least a dollar of our own money on top of it to keep them there. If we normalize what we would have spent in a free market on drugs at $100, consumers are now spending $200 on half the quantity of drugs and then spending another $100 on top of that to put all those people in jail. So we’re paying three times as much for half as much output. From an economic point of view, that’s more than a little bit counterproductive.

Usually you think, if I’m going to produce less output at least it should cost me less.

Region: So, rational addiction but irrational …