Oligopoly

     Oligopoly:  According to N. Gregory Mankiw, an oligopoly is defined as a market structure in which only a few sellers offer similar or identical products. It highlights the number of firms in any market, which differentiates oligopoly from other market structures like perfect competition and monopoly. In an oligopoly, because there are only a few firms, each firms are concerned about the decision that are being taken by the other firms in the market when making decisions about pricing, production, and other factors. This interdependence is a key characteristic of oligopolistic markets.

   

    One extreme form of an oligopoly is a duopoly, where the market is dominated by only two firms.

   - Commercial airline manufacturing industry is an example of duopoly. Airbus and Boeing are the two players dominate the market worldwide.

    Key features of an oligopoly include:

1. Few Firms: The market is controlled by a small number of large firms, each with significant market share.

2. Interdependent Decision-Making: Firms in an oligopoly are highly aware of each other's actions. Decisions made by one firm, such as changing prices or output, can significantly affect the others.

3. Barriers to Entry: High barriers to entry prevent new firms from easily entering the market. These barriers can be due to high startup costs, economies of scale, or regulatory restrictions.

4. Product Differentiation: Products offered by the firms can be either homogeneous (similar) or differentiated (distinct but substitutable). In some oligopolies, firms may compete on product features, branding, and quality.

5. Potential for Collusion: Firms may engage in collusion, often called cartel, to set prices or output levels, reducing competition and leading to higher prices for consumers. However, collusion is illegal in many jurisdictions.

Supply-Demand dynamics: 

 Demand Dynamics:

1. Interdependence: Each firm's demand curve is shaped not only by its own pricing and output decisions but also by the actions of its competitors. This interdependence adds complexity to predicting the exact shape of the demand curve.

2. Kinked Demand Curve: In oligopoly theory, the kinked demand curve model proposes that firms face a dual demand curve:

• When a firm increases its price, competitors are unlikely to follow suit, resulting in a notable loss of market share and a relatively elastic demand curve above the current price.

• Conversely, if a firm decreases its price, competitors are likely to match the reduction to prevent market share loss, resulting in a relatively inelastic demand curve below the current price.

3. Market Power: Firms possess a level of control over prices, enabling them to exert influence within the market.

Supply Dynamics:

1. Strategic Decision-Making: Firms need to analyze the potential impact of their production and pricing choices on competitors and anticipate their reactions. This often results in a cautious approach to decision-making.

2. Barriers to Entry: Significant hurdles to entry help maintain the oligopolistic market structure by deterring new entrants. These obstacles may encompass substantial startup expenses, economies of scale, and regulatory constraints.

3. Potential for Collusion: There's the possibility that firms could cooperate, either openly or implicitly, to establish prices or production levels, diminishing competitive pressures. This collaboration could result in elevated prices and decreased output compared to a more competitive environment. Nonetheless, collusion is prohibited in numerous jurisdictions, and sustaining it over time can be challenging due to individual firms' incentives to deviate from agreements.

4. Non-Price Competition: Firms frequently participate in non-price rivalry by investing in advertising, enhancing product distinctiveness, and enhancing service quality. These strategies aim to secure market share without instigating a price-based conflict.

 Equilibrium:

- Nash Equilibrium: In oligopolistic markets, firms move towards a Nash equilibrium, where no firm can improve its position by altering its strategy independently. This equilibrium reflects the strategic considerations of all firms operating within the market.

- Price Rigidity: Prices in oligopolistic markets tend to be more rigid compared to other market structures. Firms are often reluctant to change prices due to the potential reactions of competitors and the kinked demand curve effect.

Illustrations:

    1. The global soft drink industry, dominated by Coca-Cola and PepsiCo, are an oligopoly. These two giants control a substantial portion of the market share, influencing pricing and marketing strategies. Their interdependent actions shape competition, barriers to entry, and consumer choices, illustrating classic oligopolistic dynamics in the beverage sector.

    2. The global semiconductor industry, led by Intel, Samsung, and Taiwan Semiconductor Manufacturing Company (TSMC), represents an oligopoly. These key players dominate the market, controlling critical technology and influencing pricing. Their strategic decisions shape competition, innovation, and technological advancements, showcasing oligopolistic dynamics in the electronics sector.