In place of the variety of products that competition would generate, we would be forced “choose” among virtually identical insurance plans. Government would define these plans down to the last detail. Every one would have at least the same “basic” coverage, including physical exams, maternity benefits, well-baby care, alcoholism treatment, and mental-health services. Consumers could not buy a cheap, high-deductible catastrophic policy. Every insurance company would have to use an identical government-designed pricing structure. Prices would be the same for sick and healthy.

In this respect, it wouldn’t matter whether or not Congress created a “public option,” a government insurance plan. In either case, bureaucrats would dictate virtually every aspect of the health-insurance business.

What Obama says in favor of a public option " as of today, at least " tells us how little he understands competition.