Monopolistic Competition & Oligopoly: Models, Features & Real Cases

TAKEAWAYS:

• Monopolistic competition features many firms selling differentiated products (e.g., restaurants, apparel brands) with downward-sloping demand curves and zero economic profit in long-run equilibrium.
• Oligopoly is dominated by a few large firms (e.g., telecom providers like Ncell/NTC) with mutual interdependence, barriers to entry, and strategic pricing (e.g., price wars or collusion).
• Both structures exhibit non-price competition (advertising, branding, product differentiation) and excess capacity (firms produce below optimal output).
• Game theory explains oligopoly behavior (e.g., the Prisoner’s Dilemma in price-fixing scandals like Ncell vs. NTC).
• Real-world applications: Daraz uses product differentiation (seller ratings, fast delivery), Pathao employs price discrimination (surge pricing), and NEPSE’s stockbrokers operate in an oligopolistic market.
• Exam focus: Compare monopolistic competition vs. oligopoly using graphs (demand curves, profit maximization), market share data, and case studies (e.g., Nepal’s telecom duopoly).

1. Monopolistic Competition: Features and Market Structure

Monopolistic competition is a market structure where:

• Many firms compete, but each sells a unique product (e.g., coffee shops, smartphone brands).
• Easy entry/exit: No significant barriers (unlike oligopoly or monopoly).
• Price makers: Firms have some control over price due to product differentiation.
• Non-price competition: Firms rely on advertising, branding, and quality to attract customers.

Key Characteristics

Demand Curve and Profit Maximization

In monopolistic competition:

• The demand curve is downward-sloping (unlike perfect competition’s horizontal line).
• Firms maximize profit where MR = MC, but P > MC (unlike perfect competition).
• In the long run, economic profit = 0 because entry eliminates excess profits.

graph LR
    A["Many Firms\n(Differentiated Products)"] --> B["Downward-Sloping Demand\n(Unique Brands)"]
    B --> C["MR = MC\n(Profit Maximization)"]
    C --> D["P > MC\n(Price > Marginal Cost)"]
    D --> E["Zero Economic Profit\n(Long-Run Equilibrium)"]

Worked Example: Coffee Shops in Kathmandu Suppose two coffee shops, Café A and Café B, compete by offering unique blends and ambiance.

• Demand for Café A:
  • If Café A raises prices by 10%, it loses some customers to Café B but retains loyal customers.
  • Elastic demand (but not perfectly elastic like in perfect competition).
• Profit Maximization:
  • Café A sets price where MR = MC (say, Rs. 250 per coffee at 50 units sold).
  • If economic profits exist, new cafés enter → demand shifts left until P = AC (zero profit).

2. Oligopoly: Features and Strategic Behavior

Oligopoly is a market structure where:

• Few large firms dominate (e.g., telecom: Ncell vs. NTC; airlines: Yeti vs. Buddha Air).
• High barriers to entry (economies of scale, government licenses).
• Mutual interdependence: Firms watch competitors’ moves (e.g., price cuts by Ncell force NTC to respond).
• Non-price competition: Advertising, product innovation, or loyalty programs.

Key Characteristics

Oligopoly Models

1. Collusive Oligopoly (Cartel):

   • Firms agree on prices/output (illegal in Nepal but seen in global oil markets).
   • Example: OPEC (oil-producing countries) fix prices to maximize joint profits.
   • Nepal Example: Historically, NTC and Ncell were accused of price-fixing (though now liberalized).

2. Non-Collusive Oligopoly:

   • Firms compete strategically without formal agreements.
   • Game Theory: Firms use Prisoner’s Dilemma to predict rivals’ moves.
     • Example: If Ncell lowers prices, NTC may match or undercut, leading to a price war.

3. Price Leadership:

   • One firm (e.g., Ncell) sets prices, and others follow.
   • Example: Daraz may set delivery fees, and smaller e-commerce platforms adjust.

Worked Example: Telecom Duopoly in Nepal (Ncell vs. NTC)

• Market Share: Ncell (50%), NTC (40%), Smart Cell (~10%).
• Strategic Pricing:
  • If Ncell introduces a Rs. 500/month plan, NTC may respond with Rs. 450 to retain customers.
  • Outcome: Both earn positive economic profits in the long run due to brand loyalty and network effects.
• Non-Price Competition:
  • Free data for WhatsApp calls (Ncell).
  • Cashback offers (NTC).

A kinked demand curve showing how oligopolists avoid price wars: a steep segment for price increases (loss of sales) and a flatter segment for price decreases (rivals match). (Image: Perfect_competition_in_the_short_run.svg: *Perfect_competiti, CC BY-SA 3.0, via Wikimedia Commons)

3. Comparison: Monopolistic Competition vs. Oligopoly

4. Real-World Applications in Nepal

Case 1: Daraz (E-Commerce Oligopoly)

• Market Structure: Oligopoly (Daraz dominates ~70%, with Sano Commerce and Hamrobazaar as smaller players).
• Strategies:
  • Product Differentiation: Seller ratings, fast delivery, cash-on-delivery.
  • Price Discrimination: Discounts for bulk buyers, seasonal sales.
  • Barriers to Entry: High logistics costs, trust issues for new sellers.
• Profitability: Daraz earns positive economic profits due to network effects (more sellers → more buyers).

Case 2: Pathao (Ride-Hailing Monopolistic Competition)

• Market Structure: Monopolistic competition (Pathao vs. Yatra, Karkhana).
• Strategies:
  • Non-Price Competition: Driver incentives, surge pricing during peak hours.
  • Dynamic Pricing: Prices rise when demand is high (e.g., Dashain traffic in Kathmandu).
• Demand Curve: Downward-sloping (if Pathao raises prices, riders switch to Yatra).

Case 3: NEPSE (Stock Market Oligopoly)

• Market Structure: Oligopoly (dominated by Kist Bank, NMB, Global IME as major brokers).
• Barriers to Entry: High capital requirements, regulatory hurdles.
• Strategic Behavior: Brokers compete on commissions and client services (e.g., online trading platforms).

5. Exam Tip: How to Score Full Marks

1. Draw Graphs Correctly:

   • For monopolistic competition: Downward-sloping demand + MR curve, mark profit-maximizing output and zero-profit equilibrium.
   • For oligopoly: Kinked demand curve (show why firms avoid price wars).
   • Label axes clearly (e.g., "Price (Rs.)" vs. "Quantity (units)").

2. Use Real Examples:

   • Ncell vs. NTC: Discuss price wars, non-price competition, and barriers to entry.
   • Daraz: Explain product differentiation and oligopoly profits.
   • Café Example: Show how entry eliminates economic profits in monopolistic competition.

3. Compare Structures:

   • Use a table to contrast monopolistic competition vs. oligopoly (as above).
   • Highlight key differences: number of firms, barriers, profit levels.

4. Game Theory Questions:

   • If asked about collusion, explain the Prisoner’s Dilemma using Ncell/NTC price-fixing.
   • For non-collusive, describe kinked demand and strategic pricing.

5. Long-Run Equilibrium:

   • Always state: "In monopolistic competition, firms earn zero economic profit in the long run because free entry eliminates excess profits."
   • For oligopoly: "Firms earn positive profits due to barriers to entry."

Final Note: This unit is highly graphical—practice drawing demand curves, kinked demand, and market share diagrams. Examiners love real-world ties, so link theories to Nepal’s telecom, e-commerce, or banking sectors. Good luck!