There are other factors as well. For example,if a single restaurant or supermarket increases its prices, you can just go somewhere else. But switching doctors i

There are other factors as well. For example,if a single restaurant or supermarket increases its prices, you can just go somewhere else. But switching doctors is much harder to do. And is made more difficult by insurance networks. And if you don't like your insurance, you can't really switch, without changing jobs or paying a lot more to get individual insurance instead of using discounted insurance from your employer and effectively giving up compensation.