No, that isn’t how it works. Eliminating the middlemen does drive costs down a bit, but the reason that MFA is essential and MFAWWI is dumb is because the prices are driven by the market. Medicare as it currently stands is able to negotiate a good deal, but it has to compete with the prices offered by private insurance that covers healthier people with more money to spend and more ways to screw them over. Those private firms have to compete with each other and with medicare to sign up providers, and they have to compete for the dollars of the patients. So they each find creative ways to shift risk onto the individual buyers or small providers (or less-savvy small businesses) without them realizing it, and pay extra for the services they have to pay extra for to get a large enough network to compete. The big providers are also able to work the system to charge extra for their services and to work with the insurance companies to craft plans that maximize the payments without people changing their insurance. Compared against that, even relatively large businesses who want to give their employees great coverage at low cost have virtually no negotiating power.
Instead of thinking of Medicare as the government replacing insurance companies, it’s more appropriate to think of it as replacing the business-supplied insurance. A business that was large enough could make deals with the local doctors and hospitals directly and would work on behalf of its employees to get them a good deal. Many of the providers have stakeholders who also care about quality of care, but their business negotiators have to account for risk of malpractice, sustainability of costs (to pay the humans), the costs of materials, and (often) profit as well. From the business standpoint, the providers don’t have a reason to reduce the amount of care needed by an individual, while the employer (or the government) does. The insurance companies have an incentive to reduce the care they are forced to pay for, but they do this both by creating incentives for preventative care and general health and by finding ways to not pay for the expensive stuff.
No one in this equation is evil except the requisite few bad actors you get in any sector. The problem isn’t “evil insurance companies”, it is that the incentives for the insurance companies are not aligned with needs of the insured. They are not completely opposed, but they are skewed. The company wants to have a plan that the market sees as the cheapest, best, and easiest to use, and which minimizes the amount of care used by its subscribers. To do this, they do some good things (preventive care incentives, health incentives, low premiums), some not good things (co-insurance, limited networks), some shady things (high deductibles, coverage maximums, uncovered care, age-based premiums), and some outright terrible things (frequent rejected claims, pre-existing conditions if they could). Medicare has it’s own constraints: they have to pay the providers based on the going rate, they have get providers to sign up, they have to justify their costs to often-hostile members of Congress, their forms and procedures are determined by laws or regulations that have to go through a legal process to change, and they are not allowed to choose who they cover. They also have the private industry setting the standards for what’s reasonable, which means that many of the shady practices carry over.
MFA won’t be perfect, and it will need mechanisms to be adaptive and to maintain care quality. With the incentives properly aligned, though, the cost of care will gradually decrease and the quality of coverage will increase over time. MFAWWI is the pipe dream that says we can have the cake of MFA for free. It’s certainly a better option than having no public option, but it will not produce the same results and the idea that it can out-compete private insurance naturally is silly.
I think Warren should lay out a bridge to MFA where we start with a package that provides public option to begin working out the kinks, provides a service to businesses to help them negotiate based off the Medicare rates, requires that any provider who accepts private insurance for a service also accept the public option insurance, and taxes rejected insurance claims as income. Then after some time period, with a lead in to ease the shift (say, 5 years), we shift everyone onto the public option for a class of basic coverage that includes preventive care, emergency care, and other routine care such as pre-/post-natal, but still allow private insurance to cover long-term care and less-routine circumstances. Then we gradually expand the public option, which everyone is already on by default, to all non-elective care (including abortions!), and we have our MFA with a gradual shift that keeps employer-provided care in the loop.