Right, this difference of scale is enormous. Back when hospitals couldn't do that much, and were not far from being hotels with better hygiene & worse food, then how to pay for them wasn't such a hard problem. But now US healthcare is 17% of GDP (if I recall correctly) and this proportion rises with GPD, unsurprisingly, as more other needs are already met. It isn't going to go down.
Pensions are in a way similar. When steelworkers retiring at 65 could expect on average a few golden years, then deciding how to pay for that wasn't such a huge deal. When they can expect a third of their lifetime to be in retirement, then it's very different.
You say it won't come down, but that's because the US is in it's own ballgame. In most other advanced western country healthcare "only" accounts for 7~11% of GDP.
The chart on [0] is incredible. I also shows how much that percentage has grown over the last 45 years.
I agree it's higher, and while some of this is waste, some of the higher proportion is explained by the US being richer.
Whether it will come down, I guess that's partly a forecasting guess. Will the healthcare sector be a smaller part of the economy in 10, 20 years? Employ fewer people? I would be extremely surprised if this happened in any advanced country.
Pensions are in a way similar. When steelworkers retiring at 65 could expect on average a few golden years, then deciding how to pay for that wasn't such a huge deal. When they can expect a third of their lifetime to be in retirement, then it's very different.