Insurance is more effective at dispersing that cost when the pool is larger, so the most effective scenario would be for everyone to pay in via taxes and simply… be covered.
Edit: I don't understand the point you're trying to make with your edit.
How much of that are salaries for underperforming, bloated structures in charge of "management" and billing?
[1]https://www.theglobeandmail.com/life/health-and-fitness/heal...
So during your life - broken bones etc - roughly equal.
But if you are stuck in ICU for a year when 75+ - that's uniquely American and incredibly expensive.
"Numerous articles on EOL costs show that a large proportion of Medicare expenditures occur during the last 6 months of life.1-9 This phenomenon has continued for many years as the number of Medicare decedents has increased with the aging American population. Medicare expenditures for EOL have increased dramatically from 1983 to 2016, primarily because of the increase in the number of decedents. Other articles compare EOL expenditures in the United States to other countries10,11 or focus on Medicare expenditures for specific diseases.12-14 A recent development in the literature challenges the idea that EOL costs are responsible for a high percentage of health-care costs.15
This study suggests that your interpretation is not correct: https://www.healthaffairs.org/doi/10.1377/hlthaff.2017.0174 Mean end of life spending is only marginally higher in the U.S. than in other countries.
I've also heard that something like 5% of folks generate 50% of costs.
So the argument has been that because in the US total expenditure can go so high (ie, we will easily spend $10M on one person where other countries won't) that you end up with a serious spike as a result of last year of life and extraordinary effort costs.
Other countries have less variance (including income inequality)
Extrapolated cost for Canada: 6,758.2
[1]https://www.longwoods.com/content/20878/healthcare-quarterly...
In any case, it's not the correct number. Quebec data from the study I cited showed 60k per capita on hospital alone, with incomplete data to characterize the remainder of the costs.
Assuming nothing else changes, it'll about double the cost of what people pay now for private insurance (in terms of taxes).
However, there's no reason to assume nothing else changes. The US spends an atrocious amount on the overhead of bookkeeping our "free-market" semi-adversarial healthcare system. Estimates over the past 22 years range from 13 to 25% of the cost is raw administration. Assume most of that cost goes away (let's say 90%, which seems fair) and you're left with Americans paying about $250-400 a month more on average in taxes for healthcare than what is paid now.
Since it's taxes, the progressive tax rate would kick in and this would translate overall to most Americans paying almost nothing more, the middle class getting squeezed (this could be ameliorated with laws, but if nothing else changes the middle class gets squeezed), and the wealthy and super-wealthy shouldering the bulk of the cost.
Problems are often not addressed in a reasonable time frame because many people don't have access to reasonable health care. Even they they do, they may be hesitate to use it. Anecdotally, last time I went for a preventative check, I was given an FAQ sheet when I signed in reminding me that if I ask about anything specific, or diagnostic, that is not preventative (as if I'm supposed to understand the difference), then it would have to be billed separately and may-or-may-not be covered by my insurance. That was almost enough for me to not ask my doctor questions while I was at the office.
I would imagine that more widely addressing issues early on before they become expensive would remove another large portion of overall US healthcare costs.
EDIT: Some argue here that it'll average out, however at what cost to others? [1]Here's article about African Americans getting limbs amputated as their treatment for diabetes.
[1]https://features.propublica.org/diabetes-amputations/black-a...