It seems that they don't. The paper has a good article in the business section discussing how drug companies use illegal or unethical methods to push their drugs in order to take advantage of the huge patent rents available. However, the lengthy article never once notes that the patent system is at the heart of the problem. If drug research was financed through a mechanism that allowed drugs to sell at their market price, the incentives for this sort of corruption would disappear.
--Dean Baker
