Porter's Five Forces (SBL)

Porter's Five Forces (SBL)

Porter's Five Forces is a strategic analysis framework that helps organisations understand the intensity of competition in an industry and its profitability. It identifies five key forces that shape an industry: competitive rivalry, the threat of new entrants, the threat of substitute products or services, the bargaining power of buyers, and the bargaining power of suppliers.

Why this actually matters

Feeling like you're studying the wrong things for SBL is a major source of stress. Porter's Five Forces is a core model examiners use repeatedly. Mastering it means you are definitely studying the right material and can apply it for guaranteed marks, giving you certainty and focus.

Structured breakdown

To apply Porter's Five Forces effectively, analyse each of the five areas. A logical structure will help you cover all bases in an exam answer.

• Threat of New Entrants: How easy is it for new competitors to enter the market? Consider barriers to entry like economies of scale, capital requirements, brand identity, and government policy. High barriers protect existing firms.
• Bargaining Power of Buyers: How much power do your customers have to drive down prices? This is high when there are many sellers, products are standardised, and buyers can switch suppliers easily. Powerful buyers can squeeze industry profitability.
• Bargaining Power of Suppliers: How much power do your suppliers have to increase their prices? This is high when there are few suppliers, their product is crucial, or the cost of switching suppliers is high. Powerful suppliers can capture more of the value for themselves.
• Threat of Substitute Products or Services: How likely are customers to switch to a different product or service that meets the same need? For example, video conferencing is a substitute for business travel. The availability of close substitutes can cap prices and profitability.
• Rivalry Among Existing Competitors: How intense is the competition between existing firms in the industry? This is high when there are many competitors of similar size, industry growth is slow, and exit barriers are high. Intense rivalry leads to price wars and reduced profits.

Worked example

Scenario: You are a strategy consultant analysing the European budget airline industry.

Pro Forma / Layout:

Analysis of the European Budget Airline Industry using Porter's Five Forces

1. Threat of New Entrants: High

• Low Capital Requirements (relatively): Aircraft can be leased rather than purchased outright, reducing the initial investment.
• Access to Distribution Channels: Online travel agents and direct-to-consumer websites are readily available, removing the need for traditional travel agent networks.
• Limited Brand Loyalty: Customers are highly price-sensitive and will switch airlines for a cheaper fare, meaning new entrants can attract passengers quickly with low prices.

2. Bargaining Power of Buyers: High

• Price Sensitivity: The primary decision factor for most budget airline customers is price.
• Low Switching Costs: It costs nothing for a customer to compare prices on a different airline's website.
• High Availability of Information: Price comparison websites (like Skyscanner, Kayak) make it easy for buyers to find the cheapest option.

3. Bargaining Power of Suppliers: High

• Aircraft Manufacturers: There are only two major aircraft suppliers (Airbus and Boeing), giving them significant power over pricing and delivery schedules.
• Pilots and Skilled Staff: There is a global shortage of trained pilots, giving them high bargaining power for salaries and conditions.
• Airport Landing Slots: Key airports (e.g., London Heathrow, Paris Charles de Gaulle) have limited capacity, making landing slots a scarce and expensive resource controlled by airport authorities.

4. Threat of Substitutes: High

• Rail Travel: High-speed trains are a direct substitute for short-haul flights (e.g., London to Paris).
• Video Conferencing: For business travellers, virtual meetings (via Zoom, Microsoft Teams) are a substitute for face-to-face meetings, reducing the need for travel.
• Cars/Coaches: For domestic or shorter cross-border journeys, driving or taking a coach is a cheaper alternative.

5. Rivalry Among Existing Competitors: Very High

• Numerous Competitors: The market includes major players like Ryanair, EasyJet, Wizz Air, and numerous smaller national carriers.
• High Fixed Costs: Airlines have high fixed costs (aircraft, staff, maintenance), creating pressure to fill seats, often leading to price wars.
• Perishable Product: An empty seat on a flight cannot be sold later; its value perishes at takeoff, incentivising heavy discounting to ensure planes are full.

Conclusion: The European budget airline industry is structurally unattractive. The combination of high buyer power, intense rivalry, and strong threats from new entrants and substitutes severely limits overall profitability. The high power of suppliers further squeezes margins.

Marking Logic: A good answer would receive marks for identifying each force (1 mark each), applying it to the case study facts with a clear explanation (1-2 marks per force), and drawing a logical conclusion about the industry's overall attractiveness. Simply listing the forces with no application would score very few marks.

If you're working full-time

Trying to master every model for SBL while working is a recipe for burnout. Focus your limited time on "connector" models like this one. Porter's Five Forces connects to PESTEL, SWOT, and strategic choice. Spend one 90-minute session this week purely on this model. First, understand the five headings. Then, apply them to a company you know well, like the supermarket you shop at or your own employer. Don't aim to be perfect. Aim to produce a one-page analysis. This is a far better use of time than passively reading a textbook for hours.

Common mistakes

• Listing instead of applying: Stating "The threat of new entrants is high" without explaining why based on the scenario specifics. You must use the case study data.
• Mixing up forces: Confusing competitors with substitutes. A substitute is a different way of meeting the need (e.g., train instead of plane). A competitor meets the need in the same way (e.g., another airline).
• Confusing buyer and supplier power: For an airline, passengers are buyers. Airbus and Boeing are suppliers. Don't mix them up.
• No conclusion: Failing to summarise the analysis. Your final paragraph should state whether the industry is attractive or unattractive and why, based on your findings.
• Ignoring the "so what": Not explaining the implication of the force. For example, "High buyer power leads to price pressure, which squeezes profit margins for all firms in the industry."
• One-sided analysis: Only looking at factors that increase a force, not those that might decrease it. A balanced view shows deeper thinking.
• Using it for a single company: The model analyses an industry or market, not a single company. The output informs the strategy of a company within that industry.

How examiners think

Examiners use models like Porter's Five Forces to test your application skills, not your memory. They want to see if you can act like a consultant.

• What scores marks: Applying each force to the specifics of the scenario provided in the exam. Using evidence from the exhibits to justify your points (e.g., "Exhibit 3 states that customer switching costs are low, which increases the bargaining power of buyers."). A clear, concise conclusion about the overall industry attractiveness is crucial.
• What doesn't score marks: A generic definition of the five forces with no link to the case. Vague statements like "rivalry is high" without explaining why it is high for that specific industry. Long introductions about Michael Porter and the history of the model are a waste of time and earn no credit.

FAQ

Calm summary

This week, take one concrete step. Do not try to revise the entire SBL syllabus. Instead, focus on mastering this one, critical model. Find an annual report of a well-known company (e.g., a supermarket, a car manufacturer) and spend 60-90 minutes writing a one-page Five Forces analysis of its industry. This single act of application will build more confidence and exam-readiness than hours of passive reading. It gives you a reliable tool you can use with certainty in the exam.