What Romney said: “I was talking about insurance companies. We like to be able to get rid of insurance companies that don’t give us the service that we need.” This comment concerned heath insurance.

Aaron Carroll explains why Romney is essentially wrong, and incidentally explains a fundamental problem in health-insurance markets.

“The real issue, unfortunately, is that very, very few people have the luxury that Gov. Romney is endorsing. Let’s say that you are self-employed, and lucky enough to have found a company to provide you with health insurance. Then, let’s say you develop cancer. You suddenly find out that your insurance company stinks. So you fire them, right?

Of course not. You’re screwed. Now you have a pre-existing condition. There’s not an insurance company out there that wants to cover you. So you don’t fire them. You scream, and curse, and cry, but you’re stuck. Only healthy people have the luxury of picking and choosing.

Let’s also not forget that most people don’t find out that they’re not getting “good service” until they’re sick. Healthy people don’t make much use of their insurance, so they don’t know how bad it is. They only find out after they’re ill, and then it’s too late. It’s only fun to fire the insurance company if you’re sure you can go to another company to get what you need. Almost no one can.”