By that argument, food, water cannot be a free market either. I am not saying that health care works best in a free market or not, but whether it is elastic/inelastic is not the only factor. Also, depending on which health care we are talking about, it is certainly elastic: sure, if you just got shot and are mortally wounded, you are pretty much ready to pay anything you can to get treated, but maybe that private room or new cancer treatment twice as expensive without proved benefits is not that necessary.