...what? Insurance companies are not a "barrier" between doctors and patients. What, do you think some sort of insurance gremlin will manifest out of the ground and kick you in the nuts if you try to visit a doctor while uninsured? Doctors don't care whether you're insured or not, as long as they get paid. Insurance companies exist to soften the blow of expensive treatment. The product is not getting completely fucked over if you get very unlucky, just like with any other insurance (life insurance, car insurance, whatever). It's kind of like bitcoin mining pools, but the other way around. Now, is mandatory health insurance justified? That's a different discussion.