Market Failures and the Environment: Public Goods and the Tragedy of the Commons

Overview of Market Failures

• Definition of Market Failure: In economics, a market failure refers to a situation where the market equilibrium outcome is not socially desirable because the outcome is associated with a deadweight loss.
• Clarification: A market failure is not necessarily a financial implosion or a crisis; rather, it is any instance where the market outcome creates a loss in social efficiency.
• Corrective Role of Government: When a deadweight loss occurs due to market failure, government intervention has the potential to improve the outcome and restore social welfare.
• Comparison to Previous Topics: While previous lectures highlighted how government intervention (e.g., minimum wage, rent control) can create deadweight losses in competitive markets, market failure scenarios represent cases where the government can actually reduce deadweight loss.
• Three Primary Causes of Market Failure:     * Externalities: Situations where an individual's action has unaccounted-for spillover costs or benefits on external parties, leading to a misalignment between private and social incentives.     * Public Goods: Goods that the market tends to under-provide because of their unique properties (the current focus).     * Market Power (Monopoly): When an individual or firm can influence market price (e.g., a single seller with no competitive pressure). This leads to prices that are too high and quantities that are too low, creating a deadweight loss.

The Nature of Public Goods and the Free Rider Problem

• The Morality of Public Goods: The core challenge is the misalignment of private and social incentives. This is illustrated by the fable of the mice and the cat.
• The Fable of "Belling the Cat":     * A group of mice is terrorized by a cat. They devise a plan to put a bell on the cat so they can hear it coming and hide.     * Social Benefit: The benefit to the community of mice is enormous.     * Private Cost: The private cost (risk of death) to the individual mouse attempting to bell the cat is humongous.     * Result: Because the private cost outweighs the individual benefit, no one ever bells the cat, despite the social desirability of the outcome.
• Group Projects as a Microcosm:     * Intended lessons of group projects: team work, collaboration, responsibility, and communication.     * Actual lessons learned: "trust no one."     * Potential for Success: Group projects have high potential if everyone specializes according to comparative advantage, generating maximal gains.     * Failure Point: Few people contribute their absolute best because of the incentive to depend on the efforts of others.
• Definition of Free Riding: A situation where individuals depend on the efforts or contributions of others while putting in minimal or no effort themselves.     * If everyone plans to depend on others, no one contributes, and the social initiative fails.     * Free riding is a result of misaligned incentives, not necessarily "bad" teammates.

Real-World Consequences of Misaligned Incentives

• The Murder of Kitty Genovese (1964):     * The Incident: Kitty Genovese was stabbed to death outside her apartment in Kew Gardens, Queens, New York.     * The Statistic: Investigations initially suggested that $37$ of her neighbors watched or heard her screams, yet not a single individual intervened or successfully summoned the police during the attack.     * The Bystander Effect: A psychological phenomenon where individuals are less likely to offer help to a victim when other people are present.     * The Murderer's Logic: Winston Mosley, the murderer, later stated he had the audacity to kill her in broad daylight because he knew the neighbors wouldn't do anything, famously saying, "People never do."     * Investigation Nuance: Later investigations found one cousin did go to help but was too late, and one person tried to call the police but could not reach them. However, at least $35$ individuals remained inactive.
• Political and Academic Examples:     * Voting Participation: In the $2016$ Presidential Election, one of the most contentious in history, only $55.7\%$ of the Voting Age Population ($VAP$) showed up to vote. Approximately $44.3\%$ did not.     * Evaluations and Reviews: Most students do not complete teaching evaluations, and most customers do not leave product reviews on Amazon or Rate My Professor unless they have extreme experiences.

Defining Public Goods: Rivalry and Excludability

• Common Misconception: Public goods are not defined by being "publicly funded" or "government-owned." Though often provided by the government, they are defined by specific economic properties.
• Property 1: Rivalry:     * Rival Good: A good is rival if one person's consumption takes away from what is left for others. Example: An apple. If I eat it, you cannot.     * Nonrival Good: A good is nonrival if one person's consumption does NOT take away from what remains for others. Example: A scenic view of a landscape. One person enjoying the view does not diminish the ability of another person to enjoy the same view simultaneously.
• Property 2: Excludability:     * Excludable Good: A good is excludable if a person can be prevented from consuming it if they do not pay or contribute. Example: A laptop or a phone.     * Nonexcludable Good: A good is nonexcludable if people cannot be prevented from consuming it even if they do not pay. Example: A lighthouse or environmental quality.

Classification of Goods

• Private Goods: Both Rival and Excludable. Most consumer products (fruit, backpacks, electronics) fall into this category.
• Public Goods: Both Nonrival and Nonexcludable.     * National Defense: Protects the life and aspirations of the entire population. It is nonrival (my protection doesn't reduce yours) and nonexcludable (once the territory is protected, everyone inside is protected).     * Environmental Quality: Clean air and water survive because the environment permits it. It is available to all, and excluding one person while providing it to others is impossible.     * Lighthouses: Once lit, all ships benefit; you cannot hide the light from a non-paying ship.     * Rule of Law: The system of legal protections for society.

The Market Failure of National Defense

• Valuation: The value of national defense is essentially the value of life and everything one owns. It is a humongous dollar value, greater than houses or cars combined.
• Why Private Provision Fails:     * If a private company (e.g., "ME National Defense Fund") tried to collect voluntary payments for national defense, they would likely raise nothing.     * Free Rider Incentive: Individuals know they will be protected as long as the territory is protected, regardless of whether they pay.     * The Consequentiality Problem: A private provider cannot make non-payment "consequential." For example, they cannot tell a foreign invader to "bomb only the non-paying house," because a bomb dropped on one house in a neighborhood would destroy the neighbors' houses too.

The Free Rider Problem and International Relations

• The Paris Climate Accord (2015):     * The global climate is a global public good. If major nations like France or the U.S. reduce emissions, the whole world benefits.     * Incentive to Free Ride: Nations like India or China might have a strategic incentive to let others do the work while they continue to pollute and grow their economies.     * U.S. Withdrawal: In November $2019$ ($11/04/2019$), President Trump formally initiated withdrawal from the Accord. Strategically, this was an individually rational "free rider" decision, but it defeated the common good.

Solutions to Public Goods Problems

• Government Intervention: Since markets suffer from under-provision due to free riding, the government must step in.
• Mandatory Payment: The government provides the public good and makes payment mandatory through Taxes. Taxes solve the free rider problem by forcing all beneficiaries to contribute.
• Basic Research as a Public Good: Scientific knowledge is nonrival and nonexcludable. Profit-oriented private firms usually fund specific, marketable research but under-fund basic research. Therefore, government funding (tax dollars) is critical for basic scientific advancement.

Private Provision of Public Goods

• Evidence of Private Provision: Public goods are sometimes provided via voluntary private contributions:     * Wikipedia: A massive private voluntary initiative and public good.     * NPR/PBS: Funded in part by private donations (e.g., funding "Cookie Monster's salary" on Sesame Street).
• Three Limitations of Private Charity:     * Misalignment with Need: Donations may not go to areas where the marginal social benefit is highest.     * Economic Volatility: Charitable giving is highly variable. During economic downturns—when public goods/services are needed most—disposable income drops, and giving decreases.     * 2008 Financial Crisis: Data shows charitable giving in real value (adjusted to inflation in $20.11$ dollars) took a significant dip during the global financial crisis and did not recover until approximately $2011$.

Economic Tips for Success

• Solving Apartment Free Riding: Roommates not doing dishes is a free rider problem of misaligned incentives.     * Solution: Create a joint fund at the start of the month (like a tax) and hire a professional cleaning service.
• Social Capital and Teamwork:     * Free riding can be mitigated by generating "Other-Regarding Preferences."     * Social Capital: The extent of concern for others in a group.     * Intervention: Teams should have "icebreakers" or informal meetings (e.g., meeting for a beer) before the project begins. This develops social bonds that realign private and social incentives, making individuals care about the success of their teammates.

The Tragedy of the Commons

• Definition: A subset of goods that are Rival but Nonexcludable. These are often referred to as Open Access Resources or Commons.
• The Resource Paradox:     * Naturally Regenerating Resources: We are running out of renewable resources like high-seas fish and forests fast.     * Exhaustible Resources: We are doing relatively well with fixed endowments like oil, diamonds, and minerals because they are often Private Goods protected by ownership rights.
• Current Statistics (1950s vs. 2006):     * In the $1950s$, only $1\%$ of high seas were fished, and $0\%$ of species were exploited.     * In $2006$, $63\%$ of high seas were fished annually, and $87\%$ of species were either overexploited or collapsed.
• Economic Incentive: Because these resources are nonexcludable, individuals have the incentive to snatch them up before others do ("food on a picnic table" analogy). My consumption increases scarcity for you (consumption externality), leading to a "plunder" or the Tragedy of the Commons.

Summary Classification Table

• Private Goods: Excludable and Rival (Apples, Beer, Laptops).
• Public Goods: Nonexcludable and Nonrival (National Defense, Rule of Law).
• Club Goods: Excludable but Nonrival (Cable TV, Disney World, Country Roads).
• Common Resources (Open Access): Nonexcludable but Rival (Fish in the ocean, the Amazon rainforest).

Conclusion: Efficiency vs. Fairness

• Economists view the free rider problem as an efficiency concern rather than a moral or fairness concern.
• The problem is not that free riding is "unethical"; it is that it leads to a socially inefficient equilibrium where society could be broad better off, but the incentives prevent that outcome.