I hear this a lot but I don't see people explaining what exactly their desired outcome looks like, and to me, I can see lots of ways it potentially changes things without actually improving them.
Are you picturing a world where before you call an ambulance after injuring yourself you have to get on something like yelp to look at prices for 10 different ambulance services, and ten different local urgent care or ERs? Are you picturing a world where it's obvious that some surgeons and doctors are 10 times better than others, so the rich pay $$$$$$ for 10x better care, and the poor are left with the scraps? Or a world where it's hard to tell, so people compete on price alone, and the doctors who care most about outcomes vs bottom line are at a disadvantage?