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Understanding the economic and social effects of the recent global trends of rising market concentration and market power has become a policy priority, particularly in developing countries where markets are often more concentrated. In this context, since the poor are typically the most affected by lack of competition, new analytical tools to assess the distributional effects of variations in market concentration in a rapid and cost-efficient manner are required. To fill this knowledge gap, this paper introduces a simple simulation method, the Welfare and Competition tool (WELCOM), to estimate with minimum data requirements the direct distributional effects of market concentration through the price channel. Using this simple yet novel tool, this paper also illustrates the simulated distributional effects of reducing concentration in two markets in Mexico that are known for their high level of concentration: mobile telecommunications and corn products. The results show that increasing competition from four to 12 firms in the mobile telecommunications industry and reducing the market share of the oligopoly in corn products from 31.2 percent to 7.8 percent would achieve a combined reduction of 0.8 percentage points in the poverty headcount as well as a decline of 0.32 points in the Gini coefficient.

Distributional Effects --- Employment and Unemployment --- Inequality --- Information and Communication Technologies --- Information Technology --- Market Concentration --- Poverty --- Poverty Reduction --- Simulation --- Social Protections and Labor

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The story of how economic reasoning came to dominate Washington between the 1960s and 1980s--and why it continues to constrain progressive ambitions todayFor decades, Democratic politicians have frustrated progressives by tinkering around the margins of policy while shying away from truly ambitious change. What happened to bold political vision on the left, and what shrunk the very horizons of possibility? In Thinking Like an Economist, Elizabeth Popp Berman tells the story of how a distinctive way of thinking--an "economic style of reasoning"--became dominant in Washington between the 1960s and the 1980s and how it continues to dramatically narrow debates over public policy today.Introduced by liberal technocrats who hoped to improve government, this way of thinking was grounded in economics but also transformed law and policy. At its core was an economic understanding of efficiency, and its advocates often found themselves allied with Republicans and in conflict with liberal Democrats who argued for rights, equality, and limits on corporate power. By the Carter administration, economic reasoning had spread throughout government policy and laws affecting poverty, healthcare, antitrust, transportation, and the environment. Fearing waste and overspending, liberals reined in their ambitions for decades to come, even as Reagan and his Republican successors argued for economic efficiency only when it helped their own goals.A compelling account that illuminates what brought American politics to its current state, Thinking Like an Economist also offers critical lessons for the future. With the political left resurgent today, Democrats seem poised to break with the past--but doing so will require abandoning the shibboleth of economic efficiency and successfully advocating new ways of thinking about policy.

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