Healthcare is NOT like any part of the economy. People do not shop around for healthcare and have no means to do it. When you have a heart attack, you don't go on Yelp and compare nearby hospitals. You take the nearest available medical assistance at whatever cost. As a consumer, you don't know the difference between a good MRI machine and a bad one. To compare it to free cars is bull.
I hate when economists talk out of their ass. Freaking stupid economics is more like it.
Emergency heath care may not be like much of the economy, but there are many other parts of health care to consider. Over the years as a family we have shopped for a primary care physician, a dentist, an optometrist, a pharmacy, and a facility for my wife to give birth. We also review insurance coverage periodically in case we wish to shift insurers, which has happened a couple of times over the last 25 years. Those parts of health care are quite similar to other economic decisions we make as a family.