Doctors are also very self-interested and want to advance their careers. So if the top surgeons at a hospital want the newest, most expensive toys, and will le

Doctors are also very self-interested and want to advance their careers. So if the top surgeons at a hospital want the newest, most expensive toys, and will leave for another hospital unless they get them, it might be that the hospital administrators buy unnecessary machines just to keep their best people around, at the cost of increased bills for everyone. In this story, the surgeons may not be explicitly greedy, but the system sets them up to cost everyone quite a bit.