Market failure in the context of "Economic value"

A natural monopoly is a monopoly in an industry in which high infrastructure costs and other barriers to entry relative to the size of the market give the largest supplier in an industry, often the first supplier in a market, an overwhelming advantage over potential competitors. Specifically, an industry is a natural monopoly if a single firm can supply the entire market at a lower long-run average cost than if multiple firms were to operate within it. In that case, it is very probable that a company (monopoly) or a minimal number of companies (oligopoly) will form, providing all or most of the relevant products and/or services. This frequently occurs in industries where capital costs predominate, creating large economies of scale in relation to the size of the market; examples include public utilities such as water services, electricity, telecommunications, mail, etc. Natural monopolies were recognized as potential sources of market failure as early as the 19th century; John Stuart Mill advocated government regulation to make them serve the public good.

A market economy is an economic system in which the decisions regarding investment, production, and distribution to the consumers are guided by the price signals created by the forces of supply and demand. The major characteristic of a market economy is the existence of factor markets that play a dominant role in the allocation of capital and the factors of production.

Market economies range from minimally regulated to highly regulated systems. On the least regulated side, free market and laissez-faire systems are where state activity is restricted to providing public goods and services and safeguarding private ownership, while interventionist economies are where the government plays an active role in correcting market failures and promoting social welfare. State-directed or dirigist economies are those where the state plays a directive role in guiding the overall development of the market through industrial policies or indicative planning—which guides yet does not substitute the market for economic planning—a form sometimes referred to as a mixed economy.

Microeconomics is a branch of economics that studies the behavior of individuals and firms in making decisions regarding the allocation of scarce resources and the interactions among these individuals and firms. Microeconomics focuses on the study of individual markets, sectors, or industries as opposed to the economy as a whole, which is studied in macroeconomics.

One goal of microeconomics is to analyze the market mechanisms that establish relative prices among goods and services and allocate limited resources among alternative uses. Microeconomics shows conditions under which free markets lead to desirable allocations. It also analyzes market failure, where markets fail to produce efficient results.

A Pigouvian tax (also spelled Pigovian tax) is a tax on a market activity which is generating negative externalities, that is, costs incurred by third parties. It imposes costs corresponding with the externalities, internalizing those costs to improve Pareto efficiency. Ideally, the tax is set equal to the external marginal cost of the negative externalities, in order to correct an undesirable or inefficient market outcome (a market failure).

In the presence of negative externalities, parties who did not consent to the transaction or activity, and did not receive payment, nevertheless incur some of the costs, so the total cost is not covered by the private cost of the activity. In such a case, the market outcome is not efficient and may lead to a harmful excess of the activity. Examples of negative externalities are environmental pollution and increased public healthcare costs associated with tobacco and sugary drink consumption.

Regulatory economics is the application of law by government or regulatory agencies for various economics-related purposes, including remedying market failure, protecting the environment and economic management.

In economics, excludability is the degree to which a good, service or resource can be limited to only paying customers, or conversely, the degree to which a supplier, producer or other managing body (e.g. a government) can prevent consumption of a good. In economics, a good, service or resource is broadly assigned two fundamental characteristics; a degree of excludability and a degree of rivalry.

Excludability was originally proposed in 1954 by American economist Paul Samuelson where he formalised the concept now known as public goods, i.e. goods that are both non-rivalrous and non-excludable. Samuelson additionally highlighted the market failure of the free-rider problem that can occur with non-excludable goods. Samuelson's theory of good classification was then further expanded upon by Richard Musgrave in 1959, Garrett Hardin in 1968 who expanded upon another key market inefficiency of non-excludable goods; the tragedy of the commons.