Chapter 11
Oligopoly
寡占コンペティション
An oligopoly is a market structure characterized by large firms that dominate the market, offering similar or identical products. This concentration of ...
寡占の種類:共謀
A collusive oligopoly occurs when firms in an oligopolistic market—where only a few companies dominate—agree to work together instead of ...
寡占の種類:非共謀
A non-collusive oligopoly is a market structure where only a few firms dominate but compete against each other. In this setting, firms are independently ...
寡占とその不公正な慣行
An oligopoly, where market power is concentrated among a few entities, can lead to unfair strategies that disrupt the competitive landscape and reduce ...
寡占の下での公共政策:独占禁止法
Public policy plays a crucial role in regulating the behavior of firms within oligopolistic markets to protect consumers and encourage fair competition. ...
市場の種類を区別する
Market structures are classified by distinct characteristics that influence how firms compete and set prices.
In the realm of perfect competition, ...
ベルトランコンペティション
In a Bertrand oligopoly, companies compete by strategically setting prices rather than engaging in a continuous price-cutting war. Each company ...
ベルトラン寡占のナッシュ均衡
A Bertrand oligopoly occurs when a few firms compete by strategically setting prices rather than lowering them indefinitely. In this model, firms sell ...
クルノ・コンペティション
Firms indirectly determine price through output choices, rather than avoiding price-setting altogether. Each firm assumes its competitor’s production ...
クルノ寡占における均衡
In the Cournot model, businesses compete based on the assumption that each firm chooses its production quantity by presuming its rivals’ output levels. ...
スタッケルベルク・コンペティション
The Stackelberg model illustrates a type of oligopoly where a leading firm sets its production quantity, anticipating the reaction of follower firms, who ...
スタッケルバーグとファーストムーバーアドバンテージ
The Stackelberg model explains how being the first mover in a market gives a firm a competitive edge. The first-mover advantage is the benefit of ...
差別化商品:ベルトランコンペティション
The Bertrand model with differentiated products explains how companies compete on both price and perceived value. The classic Bertrand model assumes ...
差別化製品ベルトラン市場における均衡
In the Bertrand model with differentiated products, firms compete on price while offering similar but not identical goods. Differentiation softens price ...
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