The World Health Organization (http://www.who.int/en/) keeps international statistics that are sobering. See, for example, the country profiles which include total healthcare expenditures as a percentage of GDP. The US system is by far the most expensive.
It appeared in 2014 but still relevant: The Evolution of Healthcare in the US (https://www.youtube.com/watch?v=_N3Crv1ISvw)
Have you seen the website of the Entrepreneurial & Innovation Section of the Society of Actuaries (https://www.soa.org/sections/entrepreneur-innovate/entrepreneur-innovate-landing/)?
(http://insights.som.yale.edu/insights/why-is-healthcare-so-expensive) Here is what Zack Cooper from the Yale School of Public Health thinks