It's probably roughly the same as how hospital bills work. Drug maker says they want $25,000 for this drug. Insurance company says they'll only pay 5,000. Drug

It's probably roughly the same as how hospital bills work. Drug maker says they want $25,000 for this drug. Insurance company says they'll only pay 5,000. Drug company takes $5,000 for the drug and writes the other $20,000 off as a loss so they don't pay taxes.