The proper change, of course, is that health companies actually come to meet a supply-demand curve... there are a few problems though.
1) as I pointed out people will demand the wrong kind of change, they wont hold healthcare responsible, they will just demand insurance back
2) Supply-demand and free market works great for anything where there is a reasonable supply-demand force. However the demand in healthcare is infinite because a person will (usually) give everything he owns to live just one more day. So healthcare is the one area where a free-market with minimal regulations or price fixing simply will not work against a supply-demand curve in any reasonable fashion.