Oligopoly theory
Oligopoly theory is a branch of economics that studies the behavior of firms that operate in an oligopolistic market structure. Oligopolistic markets are characterised by a few large firms that have significant influence on market pricing and market outcome. Many firms in the oligopoly market structure have a dominant share of the markets total output, usually resulting in a high degree of interdependence between large firms. Oligopoly theory is used to analyze the behavior of large firms in oligopoly markets.
In an oligopoly market structure, firms are assumed to be price makers, meaning that they are able to set prices for their products. This price-setting behavior can be studied mathematically using game theory. Firms must analyze the rest of the industry when establishing a price for their product and react appropriately to the other firms in the market. This decision making process is complex and may describe a combination of strategic, positional, and informational moves by the firms.
Oligopoly theory also can be used to examine strategic issues such as entry and exit in the oligopolistic market structure. Firms will have to analyze the current and potential competing firms in the market to establish whether entry into the market is viable or not. When there are no new entrants, firms can maximize profits by exploiting their market power. Firms can engage in non-price competition such as changing the marketing and product design of their products in order to gain market share.
An important issue in oligopoly theory is the risk of collapse due to overproduction or market saturation. When each firm produces too much, they reduce the price of their products, each other’s profits decline as well. This is a problem as it can cause market instability and a spiral of lower profit margins amongst firms in the industry.
There are several types of oligopolistic markets–monopolistic, duopolistic, triopolistic, and political. Monopolistic markets occur when there is one dominant firm in a market and no competition. Duopolistic markets are characterised by two firms competing for market share. Triopolistic markets involve three large firms and are often very competitive. Political oligopolies are markets in which a few large firms in the industry are tied together by a political or corporate alliance.
Oligopoly theory also is used to analyze the market structure itself. This involves studying firms’ decision making mechanisms and their implications for market equilibrium. A market equilibrium is the point at which the number of buyers and sellers come together and agree at a price that is mutually beneficial. Oligopoly theory can be used to determine whether there will be a monopoly, duopoly, triopoly, or political oligopoly in any given market.
In conclusion, oligopoly theory is an important branch of economics that studies the behavior of large firms in oligopolistic markets. Oligopoly theory can also be used to analyze the market structure itself and determine the various equilibrium points in markets.