This is an attempt to clarify a few of the remarks I've made over the last several days regarding the need for government intervention in health care markets.
There are two separate reasons to intervene, market failure and equity. Taking market failure first, there are a variety of failures in health care and insurance markets such as asymmetric information, market power, and principal agent problems. These can be solved by the private sector in some cases, but in others government intervention is required.
But even if the private sector or the government can solve the market failure problems adequately, there's no guarantee that the resulting distribution of health care services will be equitable. We don't expect the private sector to, for example, make sure that everyone can live on the coast and have an ocean view if they so desire, we use market prices to ration those goods, but we may want to make sure that everyone can get health care when they have serious illnesses. So equity considerations may prompt the government to intervene and bring about a different distribution of health care services than would occur with an efficient market.
I believe that economists have something to offer in both cases. In the first, economic theory offers solutions to market failures, and though not every market failure can be completely overcome, the solutions can guide effective policy responses. I prefer market-based regulation to command and control solutions whenever possible, i.e. I prefer that government create the conditions for markets to function rather than direct intervention. But sometimes the only solution is to intervene directly and forcefully.
In the second case, the idea is a bit different. Here, equity is the issue so somehow society must first designate the outcome it is trying to produce before economists can help to achieve it. Right now, it is my perception that the majority of people want to expand to universal or near universal coverage if we can do so without breaking the bank, and without reducing the care they are used to. If we can find a way to do that, the majority will come on board. If that's the case, if that's what we have collectively decided we want, then the job of the economists is to find the best possible way of achieving that outcome (or whatever outcome is desired) given whatever constraints bind the process (whether political realities should be part of the set of constraints is a point of contention, so I'll stay silent on that).
So if we are only concerned about efficiency, we do our best to resolve the market failures and leave it at that. We make sure, for example, that people have the information they need to make informed decisions about their care, that there aren't incentives that cause doctors to order too much or too little of some type of care or test, that monopoly power is checked, etc., etc. There's no guarantee that everyone will receive care, or that the distribution of care among those who do receive care will be as desired.
But if we are concerned with equity too - and most of us aren't comfortable watching people suffer when we know that help is readily available (perhaps nature imposes this externality upon us purposefully) - if we won't let people die on the street or suffer needlessly due to our sense of fairness and equity - then we will want to intervene to achieve broad based coverage in the least cost and fairest manner we can find (and there may be other equity issue that are important too).
Both reasons, equity and efficiency, can justify government intervention into health care markets. I think equity is of paramount importance when it comes to health care, so for me that is enough to justify government intervention, and the existence of market failure simply adds to the case that government intervention is needed.
So those opposed to government involvement in health care markets have to first argue that there is no market failure significant enough to justify intervention, a tough argument in and of itself, and also argue that people who, for example, go without insurance or cannot afford the basic care they need deserve no compassion whatsoever from society more generally. That's an argument I could never make even for those who could have paid for insurance but chose to take a chance they wouldn't need care, let alone for those who cannot afford it under any circumstances. I want everyone to be covered as efficiently as possible, and to be required to pay their fair share of the bill, whatever that might be, for the care that's made available to them.