> Having every person under the same plan that has the negotiating power of 327.2 million people will definitely drive costs down. Don't want to pay what the government says it is going to pay? Good luck finding customers then, because the government is bargaining on behalf of all of the customers in the US.
So my mom and her boyfriend are both under Medicare now, as was her late 2nd husband. My mom and I had both generally been Medicare For All supporters (with some reservations in my case), but I got an earful recently about how people who support Medicare For All don't know what they're in for...
The problem is with Medicare's system of billing codes. Sure, if a hospital doesn't like the reimbursement rate, they can't go find other customers. But they can - and will - find other procedures. Not making enough money from that doctor's visit? Well, we better do some tests, then, just to be sure there's no lurking problem. Oh, there was a spot on that X-ray - more tests. We didn't find anything serious, but there was a benign growth that you probably should get taken care of. Don't worry, it's a quick procedure, it could potentially be done as an outpatient but you might want to make it an overnight hospital stay just to be sure. Shit, you contracted an infection in the hospital? Gotta extend that stay until you're better.
Basically, if they can't raise prices, they will find ways to do more procedures. My mom's description of what modern American health care is like as a senior citizen is truly terrifying - basically they manufacture illnesses so that they can cure them and bill for it.
I came to the conclusion (reinforced by every corporate scandal you read about on HN, and my time in the financial and tech industries) that the problem isn't health care per se, but something is deeply broken in American culture. People don't give a shit about their fellow Americans as people, only as dollars, and as a result no matter what system you institute it will end up being gamed in harmful ways. The U.S. is falling from a high-trust to a low-trust society, and there are few if any ways to bring it back.