The Insurance Industry's Role in the Rise of Insulin Prices

There's a claim that it has although I'm a little dubious. The charge is that the fairly rapid increase in the list price of insulin, not in the net price has been driven by the PBM discounts. And so that's made things more complicated as an economist on little dubious because if they were setting the monopoly price, the profit maximizing price for list price paying customers 10 years ago, they just because they're getting less from and sure doesn't mean they can extract more from less price paying customers or whatever was the limit on how much those people would pay still there.