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The kinked demand curve for a joint profit-maximizing oligopoly industry can model the behaviors of oligopolists' pricing decisions other than that of the price leader. Above the kink, demand is relatively elastic because all other firms' prices remain unchanged.
The Bertrand model has similar assumptions to the Cournot model: Two firms; Homogeneous products; Both firms know the market demand curve; However, unlike the Cournot model, it assumes that firms have the same MC. It also assumes that the MC is constant. The Bertrand model, in which, in a game of two firms, competes in price instead of output ...
In order to distinguish themselves well, these firms can compete in price, but more often, oligopolistic firms engage in non-price competition because of their kinked demand curve. In the kinked demand curve model, the firm will maximize its profits at Q,P where the marginal revenue (MR) is equal to the marginal cost (MC) of the firm.
An increase in a competitor's price is represented as an increase (for example, an upward shift) of the firm's demand curve. As a result, when a competitor raises price, generally a firm can also raise its own price and increase its profits.
When comparing the models, the oligopoly theory suggest that the Bertrand industries are more competitive than Cournot industries. This is because quantities in the Cournot model are considered as strategic substitutes ; that is, the increase in quantity level produced by a firm is accommodated by the rival, producing less.
Oligopoly: The number of enterprises is small, entry and exit from the market are restricted, product attributes are different, and the demand curve is downward sloping and relatively inelastic. Oligopolies are usually found in industries in which initial capital requirements are high and existing companies have strong foothold in market share.
In microeconomics, the Bertrand–Edgeworth model of price-setting oligopoly looks at what happens when there is a homogeneous product (i.e. consumers want to buy from the cheapest seller) where there is a limit to the output of firms which are willing and able to sell at a particular price. This differs from the Bertrand competition model ...
The graph below depicts the kinked demand curve hypothesis which was proposed by Paul Sweezy who was an American economist. [29] It is important to note that this graph is a simplistic example of a kinked demand curve. Kinked Demand Curve. Oligopolistic firms are believed to operate within the confines of the kinked demand function.