The deeper problem is the demographic pyramid. We have lots of old people and the younger generation is smaller. Of course there's not enough caretakers, which is why the US systematically imports them from other countries, leaving those countries with the same problems.
Ultimately, there is no escaping the market. No amount of public-funding, socialism, or outright communism can escape the simple facts of supply and demand. Right now, medicine is expensive because demand exceeds supply. Do insurance companies and bad administrations exacerbate that? Yes, of course they do. But they are only exacerbating an existing problem.
I don't disagree that the population pyramid shape is a root factor. And that shape is likely to get worse, not better as time goes on.
Given that it's not "solvable" (at least not without a nice pandemic targeting old people, who can be convinced not to protect themselves) it's worth then looking at "best", not necessarily "perfect", systems that may deal with it.
The approach of "best healthcare for those who can afford it" is one way to go. All resources ploughed into some sub-section of humanity, those who can pay the most.
Or we might go with "good healthcare for everyone", so alas limited heart transplants.
And I get it. There will be winners and losers. At an individual level you can have all the money in the world, and yet die when some poor person is ahead of you in a queue. "Surely the queue should be in order of net-wealth?".
No system is going to make every medical intervention on all patients all the time. We won't in fact live forever.
That doesn't necessarily mean that the current system is the best alternative. (unless you're a share-holder, then it clearly is.)
What you're saying maybe true in the long run but it's not true right now. There are more nurses holding nursing degrees that are not in bedside care than nurses performing bedside care right now in the United States.
These people could easily be brought back into bedside care but the pay and conditions are absolutely abysmal.
IIRC, that swapped a few years ago...Millenials are now the largest cohort followed by Gen-Z, Boomers and then Gen-X.
Given Gen-X is both the smallest and next cohort to start retiring, I'm guessing medicare, SSI, etc. will have a few years to 'catch-up' before the Millenials start retiring.
Ultimately, there is no escaping the market. No amount of public-funding, socialism, or outright communism can escape the simple facts of supply and demand. Right now, medicine is expensive because demand exceeds supply. Do insurance companies and bad administrations exacerbate that? Yes, of course they do. But they are only exacerbating an existing problem.