In economics, a monopsony is a market form in which only one buyer faces many sellers. It is an example of imperfect competition, similar to a monopoly, in which only one seller faces many buyers. As the only or majority purchaser of a good or service, the "monopsonist" may dictate terms to its suppliers in the same manner that a monopolist controls the market for its buyer.
A monopsony is a market condition where multiple sellers, [the majority of sellers in that market] all have to sell to the same individual buyer because that buyer is buying a significant portion of the entire market. This gives the buyer the advantage because the buyer can keep asking each seller to match or undercut the competing sellers prices, thus driving down the prices of the products in that market.
The term was first introduced by Joan Robinson in her influential book, The Economics of Imperfect Competition. Robinson credits classics scholar Bertrand Hallward at the University of Cambridge with coining the term.
Paul Robin Krugman ( /ˈkruːɡmən/; born February 28, 1953) is an American economist, Professor of Economics and International Affairs at the Woodrow Wilson School of Public and International Affairs at Princeton University, Centenary Professor at the London School of Economics, and an op-ed columnist for The New York Times. In 2008, Krugman won the Sveriges Riksbank Prize in Economic Sciences (informally the Nobel Prize in Economics) for his contributions to New Trade Theory and New Economic Geography. According to the Nobel Prize Committee, the prize was given for Krugman's work explaining the patterns of international trade and the geographic concentration of wealth, by examining the impact of economies of scale and of consumer preferences for diverse goods and services.
Krugman is known in academia for his work on international economics (including trade theory, economic geography, and international finance),liquidity traps and currency crises. He is the 17th most widely cited economist in the world today and is ranked among the most influential academic thinkers in the US.