It’s not an apples to apples cost comparison if the costs for UK and Canada literally covers everyone and the US calculation covers 1/3 of the population.

Unless I’m missing something, you’ve calculated the Medicare/Medicaid spending against the entire US population when most Americans have private insurance (as of 2022). https://www.census.gov/library/publications/2023/demo/p60-281.html

Trusts and estates for high net worth clients.