Key Determinants of Market Power and Monopoly Pricing

Factors Determining Market Power

There are three primary factors that determine the elasticity of demand for a company's products:

• 1) Market Demand Elasticity: This limits the potential for monopoly power.
• 2) Number of Market Competitors: If there are many companies, it is improbable that any single firm can influence the price.
• 3) Inter-firm Relationships: Even if there are few companies in the market, none will be able to raise prices significantly if there is intense rivalry between them.

1. Elasticity of Demand

If only one company exists, its demand curve is the market demand curve. The degree of monopoly power depends on the elasticity of market demand. However, it is more frequent that several companies compete against each other; in this case, the market demand elasticity is limited by the magnitude of the demand elasticity for each individual company.

2. Number of Companies

If other factors remain constant, monopoly power for each firm decreases as the number of competitors increases. As the number of companies grows, each firm faces greater difficulty in raising sales prices to avoid losing market share to rivals. The number of companies is significant, but the presence of major players—those with significant market share—is even more critical.

3. Barriers to Entry

When few companies dominate, they often seek to maintain their position. An important aspect is the creation of entry barriers to prevent new companies from entering the market. Examples include:

• Natural barriers: Sophisticated technology or patents that make it impossible for others to replicate a product until the copyright expires.
• Licensing: Legal requirements to operate.
• Economies of scale: Cost advantages that favor established firms.

4. Relationship Between Companies

The nature of the relationship between firms is crucial. Suppose there are four companies in a market:

• They may compete fiercely, charging prices below others to gain market share, driving prices down to competitive levels.
• They may fear that raising prices will lead to a loss of market share.
• They may choose not to compete, potentially reaching pricing agreements.