Here is the US we have a lot of socialism in the government. Social Security, and health care etc... Socialism brings lots of govt bureaucracy into everything they do. This means bigger govt and more people telling you what to do. Govt telling you what to do is Totalitarianism. It is difficult to have these socialist programs and keep them in control of the populace. They tend to become autocratic and untouchable by the voters. There is also graft and waste in Govt and the bigger Govt gets the more opportunity there is for fraud going unnoticed.
Capitalism brings bureaucracy into healthcare, that's one reason it is so expensive in the US. It brings a large amount of friction.
There's a whole bureaucratic ecosystem devoted to finding ways to deny people healthcare; that's why so many people in the US are afraid of it.
As Eisenhower put it: "beware the military-industrial complex".
The biggest problem with the US healthcare system is the lack of alignment between parties.
Insurance companies want to spend as little as possible on the patient. In their ideal world a cancer patient dies shortly after being diagnosed. Chemo is expensive and recurrence is highly likely. It's cold and harsh but that's what these companies think like.
Hospitals want to get paid for as much work as possible; doctors fear malpractice claims and will order unnecessary tests, and in some hospitals, doctors will receive a bonus for more racking up more billable hours.
Pharmaceutical companies would much rather develop a drug that keeps symptoms at bay rather than just cures the disease. That's an ongoing revenue stream for them.
Patients just want to not die or suffer from their disease, but often times are least able to do so - they possess the fewest resources of any party, and due to the resulting bureaucratic nightmare, find themselves chasing insurance companies, hospitals, billing departments and doctors to get anything done.
This kind of adversarial system is common to capitalism and in many cases it can work just fine, but the parties have to be fairly balanced and have the opportunity to shop around. Think about supermarkets competing to lower prices. You have a choice of supermarkets and consumers will not have any difficulty having to choose a different supermarket if they find their current provider is non competitive.
A state provided healthcare system works better because (my opinion), the state is in theory invested in your longer term outcomes. If you can get back to work after a cancer diagnosis you will be a taxpayer again. And we vote in political parties in part based upon their performance towards the health service; reducing appointment delays and treatment times being key metrics. It is not perfect - no system is - but no doubt at all in my mind it is better for the average person than the Kafkaesque nightmare that is the US healthcare system.