Government Interventions in Competitive Markets: Price Ceilings and Floors

Measuring Welfare and Unintended Consequences

Welfare Measurement: Economy welfare is evaluated using changes in Consumer Surplus ( $CS$ ) and Producer Surplus ( $PS$ ).
The Problem of Intent: Well-intentioned policies, such as price restrictions on essentials during emergencies, often produce severe unintended consequences.
Example: COVID-19 Toilet Paper Shortage: While common perceptions blame supply chains or panic, the shortage was exacerbated by hidden impacts of government-mandated price controls.

Introduction to Price Controls: Price Ceilings

Definition of Price Ceilings: A government-mandated maximum price allowed by law; it is illegal to buy or sell a good above this "ceiling."
Historical Context (The Nixon Price Freeze): In August 1971, President Richard Nixon declared price increases illegal throughout the United States to control inflation.
Market Signal Failure: * With price ceilings, buyers cannot signal increased demand by bidding prices up. * Suppliers have no incentive to increase the quantity supplied ( $Q_S$ ) because they cannot increase the price ( $P$ ).
The Result - Shortages: A shortage occurs when the quantity demanded ( $Q_D$ ) exceeds the quantity supplied ( $Q_S$ ) at the controlled price. * 1970s Gasoline Crisis: Price ceilings on gasoline led to a disappearance of fuel at stations. * Bidding with Time: Since buyers could not compete with money, they competed by waiting in long lines (bidding with their time). * Wasted Value: When a buyer pays with money, the seller receives the value. When a buyer pays with time, the time is simply wasted; it does not transfer to the seller.
Economic Discoordination: * Steel Shortages: Lead to construction worker layoffs and office closure because essential building materials were unavailable. * Specific Irony: A shortage of steel drilling equipment in the 1970s made it difficult to drill for oil exactly when the U.S. was undergoing an energy crisis. * Misallocation of Heating Oil (1972-1973): In a free market, oil flows from low-value areas (e.g., California) to high-value areas (e.g., New Hampshire) where demand is high due to cold weather. Under price ceilings, there was no incentive to ship oil. Consequently, people froze on the East Coast while others had enough oil to heat swimming pools. * The Case of Drowned Chickens: Because a price ceiling was placed on chickens but not on feed, farmers realized they would lose money by fattening chicks for market. As a result, farmers drowned millions of baby chicks.

The Five Effects of Price Ceilings

1. Shortages

When the government imposes a maximum price below the market equilibrium, the quantity demanded exceeds the quantity supplied.
Under normal conditions, buyers would bid the price up to reach equilibrium. Under a ceiling, this competition is illegal, and the shortage persists.

2. Reductions in Product Quality

When goods are in shortage, sellers have more customers than goods. They no longer need to compete for customers by providing high quality.
Quality Cuts: Sellers can cut quality and costs and still sell the entire supply at the controlled price.
Examples from the 1970s: * Books printed on lower-quality paper. * $2 \times 4$ lumber shrank to $1\frac{5}{8} \times 3\frac{5}{8}$ . * Automobiles received fewer coats of paint. * The Matzo Ball Debate (1972): Complaints that Mrs. Adler's soup shrunk from four to three matzo balls per can.
Service Reduction: Sellers have no incentive to be pleasant or provide service (e.g., full-service gas stations disappeared; unpleasant service in Soviet-era stores or DMV-like environments where customers aren't profitable).

3. Wasteful Lines and Search Costs

This represents the cost of obtaining a good that is not reflected in the monetary price but is paid in time and effort.

4. Loss in Gains from Trade (Deadweight Loss)

Deadweight Loss (DWL): Lost consumer and producer surplus when mutually profitable gains from trade are not fully exploited.
In a free market, quantity is at the equilibrium level ( $Q_M$ ). Under a price ceiling, only the quantity supplied at the ceiling ( $Q_S$ ) is exchanged.
Units between $Q_S$ and $Q_M$ represent trades where the buyer's willingness to pay exceeds the seller's cost, yet they are illegal and do not occur.

5. Misallocation of Resources

Prices no longer signal where a good is most valued. High-valued users (Air Force One) cannot outbid low-valued users (Rubber Duckies).
Quantifying Misallocation: * Best Case: Goods go strictly to the highest-valued users (Maximum $CS$ ). * Worst Case: Goods go strictly to the lowest-valued users who are still willing to pay the ceiling price. * Random Allocation: If a unit of gasoline is worth between $\$4$ and $\$1$ to different users and is allocated randomly, the average value is: $\frac{1}{2} \times (\$4 + \$1) = \$2.50$ . * This is significantly lower than the value provided by the market system, which ensures the gasoline goes to the $\$4$ user.

Specific Application: Rent Controls

Short Run vs. Long Run Supply: * In the Short Run, housing supply is inelastic (buildings already exist). The shortage is relatively small. * In the Long Run, supply is elastic. Developers stop building new units, buildings are converted to condos, or they are abandoned. The shortage becomes severe.
Ontario, Canada (1975): Before rent control, 30,000–40,000 units were built annually; after rent control, this dropped to fewer than 10,000.
Slum Conditions: Landlords reduce maintenance (elevators, lawns, paint) to cut costs since they have a surplus of tenants even at low quality.
Discrimination: With many applicants for one unit, landlords can discriminate based on personal bias or exclude families with children at zero financial cost to themselves.
Illegal Bribes: Examples include "key money" or charging massive premiums for a "furnished" apartment that only contains one broken chair.
Specific Misallocation: Renters stay in large apartments after their children move out because the controlled rent is so low, while large families are forced into tiny spaces.

Case Study: Mumbai, India Rent Control

Background: Rents frozen in 1949 at 1940 levels. They have barely increased despite massive inflation and urbanization.
Price Disparity: Well-to-do families pay 500–600 rupees ( $\approx \$10$ ) for apartments worth 100,000 rupees on the market.
Infrastructure Collapse: Landlords cannot afford maintenance or even taxes. Building collapses are common as structures are in "ruinous condition."
The Vacancy Paradox: Despite an 18,000,000-unit housing shortfall in urban India, 11,000,000 properties lie vacant in urban India because landlords fear they can never evict tenants once they move in.
Cost of Regulation: A 24-month approval process and $\approx 15\%$ cost of capital mean developers can only afford to build luxury condos to break even.

Price Floors and the Minimum Wage

Definition of Price Floor: A government-mandated minimum price; it is illegal to buy or sell below this "floor."
Four Effects of Price Floors: 1. Surpluses. 2. Lost gains from trade (Deadweight Loss). 3. Wasteful increases in quality. 4. Misallocation of resources.
Surpluses (Unemployment): A surplus of labor occurs when $Q_S > Q_D$ .
Economic Impact of Minimum Wage: * Modest increases: Affect a small percentage of workers. Most (97%) already earn above the minimum. * Large increases: Can cause catastrophic unemployment. * Puerto Rico (1938): When the US mainland set a $\$0.25/hr$ floor, standard wages in Puerto Rico were only $3\text{c}-4\text{c}/hr$ . This led to massive bankruptcies and unemployment. * France: A high minimum wage relative to average wages, combined with strict firing laws, led to 23% youth unemployment in 2005.

Case Study: Airline Regulation (Civil Aeronautics Board)

Timeline: CAB regulated airfares in the US from 1938 to 1978.
Price Distortion: Regulated fares were often double the price of unregulated intra-state flights (e.g., LA to San Francisco).
Quality Waste: Because airlines couldn't compete on price, they competed on luxury (piano bars on planes, bone china, wide seats). This was "wasteful" quality because the cost exceeded the value to most customers.
Deregulation Results: In the late 1970s, the CAB was eliminated. Fares dropped dramatically, volume of flights increased, and luxury/quality waste was eliminated in favor of lower prices.

Political Economy and Alternatives

Why are controls popular? The public often fails to connect controls with their consequences. Shortages are blamed on the "greedy oil companies," "Arabs," or "OPEC" rather than the price ceiling. * Iraq Example (2003): Gas was fixed at $5\text{c/gallon}$ . Citizens blamed Americans for the resulting lines.
Better Ways to Help the Poor: * Housing Vouchers: Targeted aid that allows the poor to pay market prices, avoiding supply destruction. * Wage Subsidies (e.g., Earned Income Tax Credit): Unlike the minimum wage which reduces employment to $Q_D$ , a wage subsidy increases employment to $Q_S$ while boosting worker income. The difference is paid by taxpayers rather than forced through market distortion.