> Preventative care is cheaper than emergency care
A trope without rigour. The health community is even putting into question the value of yearly checkups (i.e. https://www.health.harvard.edu/blog/a-checkup-for-the-checku...).
It's not "flipping a switch".
> When everyone (including the unemployed) can get preventative care, total costs go down.
This is one side of the coin: when everyone goes to the doctor on a cold, total costs go way up. Its an economic problem, it requires economic solutions. Private insurance, for all its bad rep, has very strong incentives to have proper utilization. More so than government: when a patient gets hospitalized, insurance loses money. Govt never loses money!
> Your $10k is already paying for the ones who don't have insurance. Medicine is already socialized!
No need to change it then...