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A monopolist can set a price in excess of costs, making an economic profit. The above diagram shows a monopolist (only one firm in the market) that obtains a (monopoly) economic profit. An oligopoly usually has economic profit also, but operates in a market with more than just one firm (they must share available demand at the market price).
This model predicts that more firms will enter the industry in the long run, since market price for oligopolists is more stable. [56] 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.
In the long-run, firms change production levels in response to (expected) economic profits or losses, and the land, labour, capital goods and entrepreneurship vary to reach the minimum level of long-run average cost. A generic firm can make the following changes in the long-run:
The degree to which a firm can raise its price above marginal cost depends on the shape of the demand curve at a firm's profit maximising level of output. [47] Consequently, the relationship between market power and the price elasticity of demand (PED) can be summarised by the equation:
Contestable markets are characterized by "hit and run" competition; if a firm in a contestable market raises its prices so as to begin to earn excess profits, potential rivals will enter the market, hoping to exploit the high price for easy profit. When the original incumbent firm(s) respond by returning prices to levels consistent with normal ...
The firm in a perfectly competitive market will operate in two economic time horizons; the short-run and long-run. In the short-run the firm adjusts its quantity produced according to prices and costs. While in the long run the firm is adjusting its methods of production to ensure they produce at a level where marginal cost equals marginal ...
Companies do not make any economic profits in a perfectly competitive market once it has reached a long run equilibrium. If an economic profit was available, there would be an incentive for new firms to enter the industry, aided by a lack of barriers to entry, until it no longer existed. [6] When new firms enter the market, the overall supply ...
Enterprises entering the monopolistic competition market may realize profit increase or loss in the short term, but will realize normal profit in the long run. If the price of the enterprise is high enough to offset the fixed cost above the marginal cost, it will attract the enterprise to enter the market to obtain more profits.