It's much easier to switch to different options with food than it is with healthcare. For example, if cartel forms around tropical fruits, people can switch to apples. This makes it much more difficult for someone to exert market power over the food market than over the medical market.
Medical care also often involves crisis situations where you absolutely need care right now so you don't have much leverage. On the other hand, most of the time people have some flexibility in how much they eat, when they eat, and what they eat.
If a cartel forms around tropical fruits… that strikes me as a strange and unreal example. Private equity buys supermarket chains in the real world.
There are about six supermarket chaions in the city where I live. Most people will struggle to guess which ones are owned by private equity (one isn't), but almost everyone can name at least a couple of hospitals that aren't.
The history of Central America is essentially the history of these companies. Looking into it will give you more "understanding of the world" than you probably think.
Healthcare prices aren't only high for emergency care, so it shows that the emergency nature of the work isn't the issue. I'm sure doing a statistical regression would show roughly what percentage of the issue is due to it, but I would expect it to be very low given the prices of things like medication needed on an ongoing basis where one could shop around, if it was legal to do so. One can also look at elective or non-emergency surgeries, especially those where people use medical tourism to find cheaper options. That is an extreme form of shopping around, which they have to do because more local forms of shopping around are legally banned.
> It's much easier to switch to different options with food than it is with healthcare.
It wouldn't be if the supply of health care were not artificially restricted by regulation.
> Medical care also often involves crisis situations
No, medical care sometimes involves crisis situations. But much more often it doesn't. A sane health care system would treat these two cases very differently. Care for crisis situations would be handled by insurance because that's what insurance is for: unexpected situations that you can't pay for out of pocket. But routine care would not. However, our system is not sane, and insists on bundling these two things together when that makes no sense.
Medical care also often involves crisis situations where you absolutely need care right now so you don't have much leverage. On the other hand, most of the time people have some flexibility in how much they eat, when they eat, and what they eat.