* Taxes go up, but they go up less than health insurance premiums would. Remove insurance companies as an industry. [1]
* Price controls on providers (inelastic demand of healthcare means "the market" sets the price to "you pay whatever it costs so you don't die") [2]
* Allow Medicare to negotiate with drug manufacturers, otherwise buy from other countries [3]
That's about it. If Sam and YC want to see this fixed, start advocating for politicians who support single payer.
Startups will not fix this problem. Blog posts will not fix this problem. Political activism will fix this problem.
[1] https://www.youtube.com/watch?v=LtplKTHa4TA
[2] https://www.cms.gov/Research-Statistics-Data-and-Systems/Res...
[3] https://www.nytimes.com/2016/02/02/upshot/the-real-reason-me...