The beauty of the free market is that the reason companies do not charge whatever they want and screw customers over at whatever cost is because the market holds these companies accountable. That's what competition is all about. We, as consumers, are holding companies accountable by not doing business with them. That is, given that we have the choice to do so.
The important thing to note here is that we do not by any means have a free market health care system which is why insurance companies aren't exactly pleasing the consumers. It is not a free market because individuals are disconnected from the costs they incur.....
I maintain that people do not want these changes because they want free access to healthcare so they do not have to worry about any costs incurred, how this will affect future generations, and how this will affect long term medical innovation. I think that these are the 'greedy' people we have to worry about.
Read the whole thing as they say.