When is it appropriate for the government to directly provide a good rather than rely on private markets or subsidies?

• A. When the good is best produced by private markets.
• B. When the good is a public good or when private markets would underprovide due to free riders or high externalities.
• C. When there is no need for government intervention.
• D. Only through subsidies can the good be provided.

Answer: (B)

The main idea is that government provision is justified when a good would not be supplied in sufficient quantity by private markets because of its characteristics as a public good or because of externalities that markets fail to account for. A public good is non-excludable and non-rivalrous, so people can benefit without paying and one person’s use doesn’t reduce another’s. In a free market, this leads to a free-rider problem and underproduction, since private firms can’t easily charge everyone who benefits. The government can tax and directly provide the good to ensure it’s available to all at the socially optimal level.

Externalities—positive or negative—also cause private markets to underprovide or overproduce from the social perspective. When a good generates benefits beyond the private market’s valuation (positive externalities) or imposes costs on others (negative externalities), government intervention, including direct provision in some cases, can help align private incentives with social welfare.

So, direct government provision is appropriate when the good is a public good or when private markets would underprovide due to free riders or externalities.