An insurance company CEO was famously shot in broad day light just before he went into a meeting to celebrate his accomplishment of denying people healthcare for his company's profits. Nobody felt bad except other CEOs and the people they directly pay because everyone has a story of the insurance company putting profit over people. They did not get rich by treating more people.
USA HealthCare insurance companies are the _Death Panels_, run by CEO, accounts, and investors, that work to maximize profit over keeping people health. They pay _specialist_ to contradict the actual practicing doctors on why some procedure or medicine is needed.
A firm's sole responsibility is to increase profit and a maximize returns for shareholders. [0]
Then you'd be wrong. Insurance companies are limited to the amount they can collect without paying back out.
It's a fixed percentage. That means the more expensive treatment gets, the higher they can raise rates, and the more revenue they get from that fixed percentage.