What I said was that if I were starting from scratch, if we didn't have a system in which employers had typically provided health care, I would probably go with a single-payer system.
It becomes tempting to see online reputation and trust as a type of currency in this new collaborative market, and the reason is quite obvious- someone may be a well-respected seller on Fiverr but if they create a profile on Airbnb they will have to build their brand reputation from scratch.