Market failure can arise from the inefficient management of public goods and common-pool resources. We will explore effective policies and solutions to prevent this.
Most goods are allocated according to market principles, whereby consumers pay a price and suppliers receive that payment. While this allocation process generally ensures that resources are efficiently distributed through the balance of supply and demand, this is not always the case. For example, public goods such as lighthouses or streetlights, and common-pool resources such as clean air or fish in the ocean, are not subject to market principles because users do not pay for their use, resulting in inefficient resource allocation. Such situations are referred to as market failures. Since the social costs of resolving market failures can be extremely high, it is crucial to prevent them proactively. Market failure can lead to a distorted allocation of resources across the entire economy, which can ultimately lower the overall level of social welfare. Therefore, a policy approach is needed to prevent such market failures, and since the methods vary depending on the nature of the goods, it is necessary to clearly distinguish between public goods and common-pool resources.
Public goods are goods that lack both excludability and rivalry. Excludability refers to the ability to prevent people from consuming a good, while rivalry refers to the property whereby one person’s consumption of a good limits another’s ability to consume it. For example, it is impossible to prevent a specific individual from enjoying the benefits provided by a lighthouse built on the coast, and one person’s enjoyment of those benefits does not diminish the benefits available to others. In this regard, a lighthouse is classified as a typical public good. The fact that public goods lack excludability means that even if the good is produced, there is no one to pay the costs associated with its consumption; consequently, no one is willing to supply public goods voluntarily. In such situations, the government can step in to prevent market failure by supplying public goods after comprehensively considering the social costs and benefits.
To better understand the characteristics of public goods, consider an additional example. National defense services allow all citizens of a country to enjoy the same benefits, and one person’s use of these services does not reduce the availability for others. For this reason, national defense services are provided by the state, and the government collects the necessary funds from citizens through taxes. This is done to address the free-rider problem that could arise if the provision of public goods were left to the market.
In contrast, common-pool resources are goods that, like public goods, lack excludability—meaning anyone can use them for free—but are subject to rivalry. This can lead to a serious problem known as the “tragedy of the commons.” Suppose there is a pasture that anyone can freely use. Since cattle owners can graze their animals for free, they will try to bring as many cattle as possible to feed there. Even if bringing in one more cow gradually degrades the pasture, the resulting disadvantages are shared among all the cattle owners using the pasture, so the loss incurred by any individual owner is relatively small. However, since the amount of grass on the pasture is limited, once the number of cattle exceeds a certain threshold, the pasture loses its functionality. This leads to resource overuse and ultimately results in the serious consequence of the depletion of the common-pool resource.
Failure to manage common-pool resources threatens their sustainability and can lead to economic losses in the long run. For example, the situation where certain fish species face extinction due to overfishing clearly illustrates the tragedy of the commons. Fishermen try to catch as many fish as possible for short-term profit, but this ultimately leads to the depletion of fish stocks and, in the long run, risks the collapse of the entire fishing industry. To resolve these issues, appropriate government intervention is essential.
Market failure caused by public goods can be relatively easily prevented by having the government bear the costs of supplying those goods. However, since market failure caused by common-pool resources arises from individuals competing to use more of the resource, as in the example above, preventive measures are needed to properly regulate the competition for the resource. Specific preventive measures include direct government control over the use of common-pool resources or the granting of private property rights to such resources. Direct government control involves curbing demand through measures such as restricting the use of specific equipment, allocating usage times or locations, and setting usage units or costs. For example, this could involve limiting the catch of specific fish species or permitting fishing only during certain periods. Granting private property rights is a method to prevent the depletion of common-pool resources by leveraging people’s inclination to manage their own property effectively. Since both methods involve government intervention in the market, they require a social consensus regarding control mechanisms, procedures, and criteria for allocating private property rights. Furthermore, the key to success lies in ensuring the government’s ability to regulate users of common-pool resources and individuals’ capacity to manage their private property.
Ultimately, market failures caused by public goods and common-pool resources lead to a distorted allocation of resources, reducing the overall utility of society. Furthermore, if the management of goods is not carried out efficiently, there is a high probability that the benefits derived from supplying those goods will diminish. Therefore, devising efficient measures to prevent the tragedies caused by market failures and thereby improving the economic welfare of citizens must become a key economic policy for the government. Preventing market failure goes beyond the mere issue of economic efficiency; it is an essential task for achieving sustainable resource management and social equity. The government and civil society must collaborate to resolve these issues and make continuous efforts toward the efficient allocation and management of resources.
