Mancur Olson on collective action

Today in learning:

In his first book, The Logic of Collective Action: Public Goods and the Theory of Groups (1965), he theorized that what stimulates people to act in groups is incentive; members of large groups do not act in accordance with a common interest unless motivated by personal gain (economic, social, etc.). While small groups can act on shared objectives, large groups will not work towards shared objectives unless their individual members are sufficiently motivated.[7]

In 1982, he expanded the scope of his earlier work in an attempt to explain The Rise and Decline of Nations (1982). He argues that groups such as trade associations, business cartels, and labor unions have an incentive to form lobby groups and influence policies in their favor. These policies will tend to be protectionist, which will hurt economic growth; but because the benefits of such policies are concentrated, and their costs are diffused throughout the whole population, there will be little public resistance to them. As distributional coalitions accumulate, nations burdened by them will fall into economic decline. His work influenced the formulation of the Calmfors–Driffill hypothesis of collective bargaining.