I could get approximately equivalent insurance for about 40% cheaper if I went on the individual market. But, my employer pays 75% of my employer sponsored plan.
Compare Cignas global plan with and without US coverage. Somehow they can easily cover essentially all of the rest of the world for far less than the US.
Per capita numbers can be misleading on healthcare as health is labor intensive, so countries with higher wages will have higher per capita costs with otherwise similar systems.
OTOH, the US spends the second highest share of GDP on healthcare, globally, behind Tuvalu, and about a time and half the GDP share of the second highest large, developed state (Germany). [0]
[0] https://data.worldbank.org/indicator/SH.XPD.CHEX.GD.ZS?most_...
Canada? Switzerland? Germany? Yes they pay a lot worse for some jobs (software developer, and, more relevantly, doctor) but ordinary fully-loaded employee costs aren't that different from the US. Admittedly, the countries more comparable to the US tend to be more in the 60-70%-of-US-spending range, than on the lower end.
That does mean that even allowing a generous premium over the most-comparable peers, we should be able to cut total healthcare spending 20% while covering everyone and removing a major drag from our economy, and a major factor reducing overall US QoL. As it is, we're struggling (and largely failing) to even keep cost increases to merely the inflation rate.