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However, some Cournot strategy profiles are sustained as Nash equilibria but can be eliminated as incredible threats (as described above) by applying the solution concept of subgame perfection. Indeed, it is the very thing that makes a Cournot strategy profile a Nash equilibrium in a Stackelberg game that prevents it from being subgame perfect.
Cournot's discussion of oligopoly draws on two theoretical advances made in earlier pages of his book. Both have passed (with some adjustment) into microeconomic theory, particularly within subfield of Industrial Organization where Cournot's assumptions can be relaxed to study various Market Structures and Industries, for example, the ...
The concept of a mixed-strategy equilibrium was introduced by John von Neumann and Oskar Morgenstern in their 1944 book The Theory of Games and Economic Behavior, but their analysis was restricted to the special case of zero-sum games. They showed that a mixed-strategy Nash equilibrium will exist for any zero-sum game with a finite set of ...
An oligopoly (from Ancient Greek ὀλίγος (olígos) 'few' and πωλέω (pōléō) 'to sell') is a market in which pricing control lies in the hands of a few sellers. [ 1 ] [ 2 ] As a result of their significant market power, firms in oligopolistic markets can influence prices through manipulating the supply function .
Three types of oligopoly. Due to the hallmark of oligopoly being the presence of strategic interactions among rival firms, the optimal business strategy of an enterprise can be studied through the thought of game theory. Under the logic of game theory, enterprises in oligopoly market have interdependent behavior.
Companies in an oligopoly benefit from price-fixing, setting prices collectively, or under the direction of one firm in the bunch, rather than relying on free-market forces to do so. [13] Oligopolies can form cartels in order to restrict entry of new firms into the market and ensure they hold market share. Governments usually heavily regulate ...
This is the case of the basic Bertrand Competition which both firms have the same marginal cost. From the figure, MSS has illustrated that there is only one unique point that both firms are going to set their price. It is the pure strategy of Nash equilibrium. C1 < C2; It means that the marginal cost of Firm 2 is higher than the marginal cost ...
The emergence of oligopoly market forms is mainly attributed to the monopoly of market competition, i.e., the market monopoly acquired by enterprises through their competitive advantages, and the administrative monopoly due to government regulations, such as when the government grants monopoly power to an enterprise in the industry through laws ...