NPR: One key thing no one knows about Obamacare
NPR | 09.30.13
No one really knows who is going to sign up — not the Obama administration, not the insurance industry, not the president's critics. Yet the success of the law hangs on this question: Will the right mix of people sign up? In particular, will healthy people buy health insurance?
"Here's how a death spiral happens: Most of the people who sign up for an insurance plan are sick. It costs a lot to take care of them. So the next year, to cover the high health costs, the insurance company raises its premiums. But then only really sick people sign up. So the insurance company has to raise prices again. Eventually, the insurance gets so expensive that no one buys it, and the whole system falls apart."