alt Hacker NewsThere are countries in Europe which have entirely privatized healthcare systems (not even medicare/medicaid equivalents). US tried adopting some of their practices with Obamacare and even that didn’t work out. Singlepayer isn’t really necessary to have a reasonably affordable and accessible healthcare system proper regulation is.
As successful as Obamacare has been it didn't really do much to lower the cost of healthcare or claw back the billions wasted to insurance company profits. There might be some kind of regulation just as effective as single payer, but we've never seen it anywhere in the US.