The Provision of Public Goods is Suboptimal

1. Our current system is based on the assumption that congresspeople are omniscient (source)
2. The political process does not adequately communicate the preferences of citizens (source)
3. Therefore, the provision of public goods is suboptimal

How, then, are demand functions revealed? It would be disingenuous, to say the least, in an exercise whose object is to discover how demand is revealed, to assume that, ex ante, centers of power know the preferences of consuming households. We must then begin our analysis of the forces that motivate citizens to reveal their preferences by focusing on a fundamental information problem. I therefore assume that as a consequence of imperfect information concerning the preferences of citizens, centers of power will provide, except by accident, goods and services in quantities that will be either larger or smaller than the quantities desired by consuming households at the taxprices they confront, and I show that these departures from optimality inflict utility loses on these households. - Albert Breton, Competitive Governments: An Economic Theory of Politics and Public Finance

There are many problems with this public good argument. The most glaring problem that should be noted immediately is that, assuming that education indeed cannot be provided optimally by private means, what in the world would move someone to believe that government can better determine the optimal amount? Buchanan (1975) correctly notes that many economists, as soon as they believe that they have diagnosed a public good, fail to consider critically the role that government can play: "It was as if the alternatives for public choice were assumed to be available independently from some external source; there was no problem concerning the behavior of [government] suppliers and producers." - Andrew Young and Walter Block, Enterprising Education: Doing Away with the Public School System

One aspect of public goods that prevents the government making efficient decisions is the government's lack of knowledge of households' preferences and willingness to pay for public goods. - Gareth D. Myles, Public Economics

Prices must also play a more important role as a mechanism for revealing the true demand for - and therefore, indicating the efficient supply of - public infrastructure. The current disconnect between payment by users and services provided by specific infrastructure assets has led to too much public capital in some sectors and too little in other sectors. - Harry Kitchen, Physical Infrastructure and Financing

Thus, the revised definition allows us to see that public goods do not only face the long recognized risk of under-provision; they may also suffer from mal-provision – providing positive utility only for some and for others nothing, or sometimes even, only costs. A way to reduce the risk of such mal-provision could be to grant all concerned population groups a more direct say in selecting and shaping public goods, i.e. to better match publicness in consumption with publicness in decision-making. More issue-specific policy dialogue among all concerned actors and stakeholders could help achieve that. - Inge Kaul, Public Goods: Taking the Concept to the 21st Century

Because of the coercive nature of government activity, two additional results come forth. First, by voluntarily purchasing an item on the market, an individual demonstrates that he values the item more than the money price. But in paying taxes, he makes no such demonstration. The government does not know, as a business does, the value individuals place on its activity. Since government cannot obtain the information and incentive by demonstrated preferences of individuals, they cannot efficiently serve individuals. - Jeffrey Herbener, Austrian Methodology: The Preferred Tax Type

One cause of inefficiency in the provision of collective goods is familiar from the theoretical writings in welfare economics and public finance, but rarely mentioned in the PPB or cost-benefit literature. That is the difficulty of getting consumers to reveal their preferences concerning a collective good or externality, and preferences must of course be known to determine how much it is optimal to provide. - Mancur Olson, Evaluating Performance in the Public Sector

But this argument generates far more difficulties than it solves. It proves too much in many directions. In the first place, how much of the deficient good should be supplied? What criterion can the State have for deciding the optimal amount and for gauging by how much the market provision of the service falls short? Even if free riders benefit from collective service X, in short, taxing them to pay for producing more will deprive them of unspecified amounts of private goods Y, Z, and so on. We know from their actions that these private consumers wish to continue to purchase private goods Y, Z, and so on, in various amounts. But where is their analogous demonstrated preference for the various collective goods? We know that a tax will deprive the free riders of various amounts of their cherished private goods, but we have no idea how much benefit they will acquire from the increased provision of the collective good; and so we have no warrant whatever for believing that the benefits will be greater than the imposed costs. The presumption should be quite the reverse. And what of those individuals who dislike the collective goods, pacifists who are morally outraged at defensive violence, environmentalists who worry over a dam destroying snail darters, and so on? In short, what of those persons who find other people's good their "bad?" Far from being free riders receiving external benefits, they are yoked to absorbing psychic harm from the supply of these goods. Taxing them to subsidize more defense, for example, will impose a further twofold injury on these hapless persons: once by taxing them, and second by supplying more of a hated service. - Murray Rothbard, The Myth of Neutral Taxation

Nevertheless, the classic solution to the problem of underprovision of public goods has been government funding - through compulsory taxation - and government production of the good or service in question. Although this may substantially alleviate the problem of numerous free-riders that refuse to pay for the benefits they receive, it should be noted that the policy process does not provide any very plausible method for determining what the optimal or best level of provision of a public good actually is. When it is impossible to observe what individuals are willing to give up in order to get the public good, how can policymakers access how urgently they really want more or less of it, given the other possible uses of their money? There is a whole economic literature dealing with the willingness-to-pay methods and contingent valuation techniques to try and divine such preference in the absence of a market price doing so, but even the most optimistic proponents of such devices tend to concede that public goods will still most likely be underprovided or overprovided under government stewardship. - Patricia Kennett, Governance, globalization and public policy

One problem with the government's redistributional activities is that because the government is not run by an omniscient and benevolent despot, but rather by democratic decision-making, there is no underlying principle that determines how redistribution will occur. Rather, as Stigler noted, benefits are transferred to those with political power. This leads interests to engage in rent-seeking, with the attendant political costs. And because benefits go to those with political power rather than to those who, according to some justification, deserve them, it is unlikely that the ultimate result of government redistributional activity will satisfy any reasonable criteria for efficiency or equity. Meanwhile, the rent-seeking and political costs remain. - Randall G. Holcombe, Taxation, Production, and Redistribution

If a revenue source is earmarked but has no logical connection with the expenditure function it supports, then from an efficiency perspective the amount of the public service supplied will almost certainly be either too great or too small. - Richard M. Bird and Thomas Tsiopoulos, User Charges for Public Services: Potentials and Problems

Since these policies are bundled together and voters cannot evaluate them individually, the election margin cannot reveal which of these interpretations is correct, nor can the election reveal the specific amount of resources voters want to devote to each of the three policy areas. Yet for political parties to allocate resources to satisfy social preferences, parties must determine which interpretation accurately describes voters’ preferences. For if a party were elected to power because voters wanted the party to alter foreign policy—but not any of the other policies—and the party did not realize this, the party could allocate resources in ways that did not reflect social preferences. - Samuel DeCanio, Democracy, the Market, and the Logic of Social Choice

Voting and other democratic procedures can help to produce information about the demand for public goods, but these processes are unlikely to work as well at providing the optimal amounts of public goods as do markets at providing the optimal amounts of private goods. Thus, we have more confidence that the optimal amount of toothpaste is purchased every year ($2.3 billion worth in recent years) than the optimal amount of defense spending ($549 billion) or the optimal amount of asteroid deflection (close to $0). In some cases, we could get too much of the public good with many people being forced riders and in other cases we could get too little of the public good. - Tyler Cowen, Alex Tabarrok, Modern Principles of Economics

Because most public goods and services are financed through a process of taxation involving no choice, optimal levels of expenditure are difficult to establish. The provision of public goods can be easily over-financed or under-financed. Public officials and professionals may have higher preferences for some public goods than the citizens they serve. Thus they may allocate more tax monies to these services than the citizens being served would allocate if they had an effective voice in the process. Under-financing can occur where many of the beneficiaries of a public good are not included in the collective consumption units financing the good. Thus they do not help to finance the provision of that good even though they would be willing to help pay their fair share. - Vincent Ostrom and Elinor Ostrom, Public Goods and Public Choices

Nevertheless, even without perfect knowledge, the government must decide whether or not to provide the public good. It also must decide how much of the public good it should provide. Finally, the government must decide, all without guaranteed information, on a tax schema. Under such circumstances, it is not possible for the government to reach an optimal solution and a Pareto distribution of taxes for the public good. - Wilfried Eecke, Ethical Dimensions of the Economy