Porter’s Five Forces Overview

Aug 4, 2025

Overview

This lecture introduces Porter’s Five Forces, a strategic framework for analyzing the competitiveness and profitability of an industry, with examples from the airline sector.

Introduction to Porter’s Five Forces

  • Porter’s Five Forces was published in 1979 to assess industry structure and competitive intensity.
  • The model evaluates how competition influences long-term profitability and industry attractiveness.
  • Five Forces is an external analysis tool, focusing on the task (meso) environment—factors directly interacting with the company.

The Five Forces Explained

1. Rivalry Among Existing Competitors

  • Intensity of rivalry depends on number/size of competitors, slow industry growth, low product differentiation, and high exit barriers.
  • High rivalry leads to price wars, increased advertising, and lower profit margins.
  • Airline industry has high rivalry due to many similar-sized competitors, stagnant growth, high fixed costs, and hard exit.

2. Threat of New Entrants

  • New entrants increase competition by seeking market share; seriousness depends on barriers to entry.
  • High entry barriers (capital, licenses, experience, access to channels) reduce threat.
  • Airlines face high barriers, but low-cost carriers have entered due to market liberalization and leasing options.

3. Threat of Substitutes

  • Substitutes fulfill the same customer need by different means and increase switching risk.
  • Factors include number of substitutes, customer willingness to switch, and substitute price/performance.
  • In airlines, trains, cars, and emerging technologies like Hyperloop are significant substitutes.

4. Bargaining Power of Suppliers

  • Supplier power rises when few suppliers are available, switching costs are high, or inputs are unique.
  • Airlines are highly dependent on fuel and aircraft (mainly from Boeing and Airbus), making supplier power high.

5. Bargaining Power of Buyers

  • Buyer power grows when customers have many alternatives, buy in large quantities, and can easily switch.
  • Internet and price comparison tools empower airline customers, reducing loyalty and increasing buyer power.

Using Five Forces for Strategy

  • Companies can influence these forces through actions like standardizing components, product differentiation, and increasing marketing to raise entry barriers.
  • Strategic actions based on Five Forces help protect long-term profitability.

Key Terms & Definitions

  • Porter’s Five Forces — framework for analyzing industry competition: rivalry, new entrants, substitutes, supplier and buyer power.
  • Barriers to Entry — obstacles preventing new competitors from easily entering an industry.
  • Substitutes — products/services fulfilling the same customer need differently.
  • Bargaining Power — the influence suppliers or buyers have on transaction terms.

Action Items / Next Steps

  • Review and apply Porter’s Five Forces to a chosen industry, analyzing each force’s impact on profitability.
  • Prepare examples illustrating each force for class discussion.