2016年-世界发展银行全球_Competition_and_Poverty_8页_687kb

Summary of "Public Policy for the Private Sector: How Competition Affects the Distribution of Welfare"

Core Content

This document explores the impact of competition on welfare distribution, with a particular focus on the poorest 40 percent of households. It highlights how competition policy reforms can improve both economic growth and income distribution, especially in developing countries. The analysis is structured around the roles of households as consumers, producers, and employees, and evaluates the distributional effects of competition in each context.

Main Points

1. Competition and Consumer Welfare

• Food markets have the most significant impact on the welfare of the poorest households due to the high share of food in their expenditure baskets and low price elasticity.
• Monopolies and cartels in basic goods lead to higher prices and reduced consumer welfare, especially for low-income groups.
• Competition reforms such as the elimination of cartels and reduction of market barriers can lead to substantial consumer savings and welfare gains.
• In Kenya, reducing sugar and maize prices by 20% through competition reforms led to welfare gains that were 4.4 times higher for the poorest income decile than for the highest.
• In Mexico, foreign supermarket entry led to welfare gains for the average household, with the richest gaining 50% more than the poorest.
• Retail competition in the Dominican Republic reduced prices by about 6% without affecting quality.
• In the United States, increased retail variety from supercenters led to welfare gains of 20.2% of average food expenditure, with lower-income households benefiting more.

2. Competition and Producer Welfare

• Anticompetitive behavior and regulations that limit competition increase the cost of inputs for small producers, particularly in sectors like agriculture and transport.
• Cartels in the fertilizer sector increased prices by 17% globally during 1990–2010.
• Removing monopolies in ice manufacturing in Sierra Leone led to a 5–6% fall in prices and increased trade credit provision.
• Buyer collusion in India’s wheat auctions depressed prices paid to farmers by 1–4%.
• In Madagascar, the removal of the vanilla monopoly increased the purchase price for farmers and lifted 20,000 individuals out of poverty, but had limited impact on income distribution due to the small share of income from cash sales.
• In Indonesia, an effective ban on rice imports raised the incidence of poverty by nearly 1% due to the high expenditure share on rice.

3. Competition and Employment

• Product market reforms tend to increase employment over the long term and on aggregate, as they lower prices and increase output.
• In OECD countries, a reduction in product market regulations led to 1.1% short-run and 3.5% long-run employment increases.
• In Egypt, politically connected firms entering new sectors reduced aggregate employment growth by 1.4 percentage points per year.
• In France, entry restrictions on large retail stores led to a 10% reduction in employment.
• In Mexico, foreign retail entry led to a 11% reduction in traditional retail employment and 5.9% reduction in labor incomes in the long term, but had no significant effect at the municipal level.

4. Key Findings on Distributional Impact

• Competition reforms can significantly improve consumer welfare, producer returns, and employment for the poorest 40% of the population.
• Antitrust enforcement and eliminating cartels can lead to significant savings for consumers.
• Income distribution benefits more from competition in developing countries, where market failures are more prevalent.
• Policy reforms that reduce barriers to entry and promote competition can lead to greater gains for low-income households than for higher-income groups.

Key Information

• Competition policy can reduce inequality and improve shared prosperity.
• Food markets are especially important for the welfare of the poor, as they are a large portion of their expenditure.
• Cartel overcharges vary by country, with some estimates showing overcharges of up to 79.7%.
• Empirical evidence suggests that lower-income households benefit more from competition in both consumer and producer roles.
• Labor market regulations and product market reforms have different impacts on employment and wages depending on the context.
• More research is needed to better understand the distributional effects of competition in developing and emerging economies, particularly in service sectors like transport, energy, and telecommunications.

Conclusion

Competition reforms, especially in consumer and producer markets, can have positive distributional impacts by reducing prices, increasing returns, and boosting employment. However, the effects are not uniform, and poor households often benefit more than others. The interplay between competition and welfare is complex and depends on market structure, policy interventions, and regulatory frameworks. Further methodologically rigorous research is necessary to fully understand the poverty and inequality impacts of competition in developing countries.