Chapter 11 - Pure Monopoly Notes

Chapter Contents

  • Introduction to Pure Monopoly

  • Barriers to Entry

  • Monopoly Demand

  • Output and Price Determination

  • Economic Effects of Monopoly

  • Price Discrimination

  • Regulated Monopoly

Introduction to Pure Monopoly

  • Definition: A pure monopoly is characterized by a single seller in the market.

  • Characteristics:

    • Single seller: Only one firm produces the good or service.

    • No close substitutes: The product offered by the monopolist is unique and has no direct substitutes.

    • Price maker: The monopolist has significant control over pricing decisions due to the lack of competition.

    • Blocked entry: There are significant barriers preventing new firms from entering the market.

    • Non-price competition: The monopolist may engage in public relations and advertising efforts to increase demand for the product.

  • Example: Public utility companies often serve as instances of monopolies in specific markets.

Barriers to Entry

  • Definition: Barriers to entry are obstacles that prevent new firms from easily entering an industry.

  • Types of Barriers:

    • Economies of scale: Larger firms may produce goods at a lower cost per unit due to scale advantages, facilitating a natural monopoly.

    • Network effects: Platforms like the Google search engine become more valuable as more users join, creating a competitive barrier.

    • Legal barriers: Includes patents and licenses that legally protect a firm's market position.

    • Control/Ownership over essential resources: A monopolist may own critical resources that new entrants need to access.

    • Pricing and strategic barriers: Existing firms may use pricing to deter new entrants.

Monopoly Demand

Overview

  • Market Demand Curve: The demand curve faced by a monopolist is identical to the market demand curve.

  • Downward Sloping Demand Curve: As the monopolist lowers the price, they can sell more, which means their demand curve slopes downward.

  • Single-Price Monopoly: The monopolist must reduce the price on all units sold to increase total sales, meaning marginal revenue (MR) is typically less than price.

Monopoly Demand Schedule

  • Revenue Data Table: Outline how revenue changes based on the quantity sold.

    • Columns:

    1. Quantity of Output

    2. Price (Average Revenue)

    3. Total Revenue (calculated as Quantity × Price)

    4. Marginal Revenue (change in total revenue from selling one more unit)

  • Price and marginal revenue continuously decrease as more is produced


  • Example of Revenue Data:

    Quantity

    Price

    Total Revenue

    Marginal Revenue


    0

    $172

    $0

    -


    1

    $162

    $162

    $162


    2

    $152

    $304

    $142


    …

    …

    …

    …


    10

    $72

    $720

    -$18

    Monopoly Demand, MR, and Price

    • The marginal revenue curve is downward sloping and lies below the demand curve, highlighting that for a monopolist, P > MR.

    Output and Price Decision

    • To maximize profits:

      • A monopolist will:

      • Increase output if MR > MC (Marginal Cost).

      • Decrease output if MR < MC.

    • Optimal Output Condition: The monopolist produces at the output level where MR=MCMR = MC

    • Setting Price: Set the price according to the demand schedule

    • Find where MR =MC then move the point up to the demand curve

    Profit Maximization by a Pure Monopolist

    • Data Example: Tables capturing total revenue and costs for various output levels.

      • Revenue and Cost Data:

    • Graphical Representation: Illustrate the profit maximization process where the output corresponds to the intersection of MRMR and MCMC.

    Misconceptions of Monopoly Pricing

    • Monopolies do not charge the highest price possible; they aim to maximize total profit rather than unit profit.

    • Possibility of losses exists if average total costs exceed revenue at output levels.

    Inefficiency of Pure Monopoly Relative to a Purely Competitive Industry

    • Comparison Diagram:

      • Purely competitive market leads to an equilibrium where P=MC=extminimumATCP = MC = ext{minimum ATC}.

      • Monopoly Condition: Monopolists produce less and charge higher prices, failing to achieve allocative and productive efficiency (i.e., P > MC).

    Price Discrimination

    • Definition: Price discrimination involves charging different prices to different buyers for the same product, not based on cost differences.

    • Conditions for Successful Price Discrimination:

      • The firm must possess monopoly power.

      • The market should be capable of segmentation.

      • There must be a prevention of resale among consumers.

    Examples of Price Discrimination

    • Common applications include:

      • Business travel

      • Movie theaters

      • Golf courses

      • Railroad companies utilizing different rates for tickets

      • Coupons and international trade practices

    Price Discrimination Applied to Different Groups of Buyers

    • Economic Framework: Price discrimination may involve adjusting prices for specific consumer groups such as:

      • Business vs. Small businesses: Charge different rates depending on the buyer's market segment.

    Regulated Monopoly

    • Definition: Refers to the regulation of monopolies to ensure fair pricing and access to consumers.

    • Types of Pricing Regulation:

      • Socially Optimal Price: Price set equal to the marginal cost. Often leads to losses for the firm.

      • Fair-Return Price: Price set equal to average total cost, allowing the firm to earn average profit.

    Rate Regulation of a Natural Monopoly

    • Graph Representation: Illustrate various prices and outputs associated with fair-return and socially optimal pricing in the context of a regulated monopoly.