First the people who have private health insurance (middle class salaried folks who vote) don’t want any change or are very afraid of change.
Second, Americans are addicted to expensive medications and costly tests which are generally unnecessary.
Third, saving money on healthcare means cutting people’s incomes (those who work in health care). That reduces economic turnover and wealth. If you suddenly eliminate 1/2 the health care industry, you eliminate a substantial portion of GDP.
Good summary. It’s basically the same situation as in “Idiocracy” where the economy collapses after they stop spraying Brawndo on the crops. Everything you need to understand the world today can be found in that film.