There are two strongly distinctive aspects of health care. One is that you don’t know when or whether you’ll need care — but if you do, the care can be extremely expensive. It must be largely paid for by some kind of insurance. And this in turn means that someone other than the patient ends up making decisions about what to buy.
The second thing about health care is that it’s complicated, and you can’t rely on experience or comparison shopping. (“I hear they’ve got a real deal on stents over at St. Mary’s!”)