Porter's Five Forces
Analyse how attractive and competitive an entire industry is, not just one company's internal position.
15 min · Michael Porter, Harvard Business School, 1979
What is this framework?
Porter's Five Forces examines the whole industry a venture competes in, not just the venture itself. It looks at rivalry among existing competitors, the threat of new entrants, the threat of substitute products, and the bargaining power of suppliers and of buyers. Together these forces show how much profit potential and competitive pressure exists in an industry.
Michael Porter developed this framework to explain why some industries are more profitable than others, regardless of how well an individual company is run. It shifts attention away from a single firm's internal strengths and weaknesses and towards the structural forces shaping an entire industry: how many competitors are fighting for the same customers, how easily new competitors can enter, whether alternative solutions exist, and how much power suppliers and customers hold over pricing.
The five forces are: rivalry among existing competitors, threat of new entrants, threat of substitute products or services, bargaining power of suppliers, and bargaining power of buyers. A strong force pushes down industry profitability and raises competitive pressure; a weak force does the opposite. Rivalry sits at the centre because it is directly shaped by the other four.
For students analysing an industry such as food delivery, ride-hailing, or online tutoring, this framework explains why certain industries are structurally brutal — low entry barriers, powerful buyers who can switch apps instantly, and many substitutes — even when individual companies within them are well managed. It is an industry-level lens, deliberately separate from analysing any single company's internal capabilities.
What problem does it help solve?
- Explains why an entire industry is structurally attractive or unattractive
- Clarifies where real competitive pressure is coming from, beyond direct rivals
- Helps decide whether to enter an industry, and how to position within it
- Identifies which stakeholders (suppliers, buyers) hold the most negotiating power
- Complements internal analysis tools such as SWOT with an external, industry-wide view
The framework
The four surrounding forces all put pressure on the intensity of competitive rivalry at the centre.
Every part explained
Competitive rivalry
The intensity of direct competition among existing players in the industry.
Ask: How many competitors are fighting for the same customers, and how aggressively?
Example: Numerous food delivery apps compete intensely on price, speed, and rider incentives.
Threat of new entrants
How easily new competitors could enter the industry and compete away profits.
Ask: What stops a new competitor from entering this market tomorrow?
Example: Low technical barriers mean new delivery apps can launch quickly in a new city.
Threat of substitutes
The risk that customers switch to a different type of solution altogether.
Ask: What else could a customer use instead, even if it's not a direct competitor?
Example: Customers could simply cook at home or collect food themselves instead of ordering delivery.
Bargaining power of suppliers
How much leverage suppliers have to raise prices or reduce quality for the industry.
Ask: Can our suppliers dictate terms to us, or do we have many alternatives?
Example: Restaurants can list on multiple platforms, limiting any single delivery app's leverage over them.
Bargaining power of buyers
How much leverage customers have to demand lower prices or better service.
Ask: Can customers easily switch or demand better terms, and how price-sensitive are they?
Example: Diners can switch delivery apps instantly by comparing prices on their phone before ordering.
Worked example — The food delivery industry in Malaysia
A team evaluating whether to launch a niche food delivery service analyses the industry structure first.
Competitive rivalry
High: several established platforms compete aggressively on delivery speed, fees, and promotions.
Threat of new entrants
Moderate: technology is easy to replicate, but building a large enough rider and restaurant network is harder.
Threat of substitutes
High: home cooking, workplace canteens, and dine-in options all substitute for delivery.
Supplier power (restaurants)
Moderate: restaurants can list on several platforms simultaneously, limiting dependence on any one app.
Buyer power (customers)
High: customers compare apps easily and switch based on small price or delivery-time differences.
Overall industry attractiveness
Low to moderate: intense rivalry and high buyer power squeeze margins industry-wide.
Strategic implication
A new entrant should avoid competing head-on citywide and instead target an underserved niche, such as a single university campus.
This analysis is about the industry as a whole, not about whether any single delivery company is well run internally.
How to use it
- 1Define the specific industry boundary you want to analyse.
- 2Assess competitive rivalry: how many players compete, and how intensely.
- 3Assess the threat of new entrants: how easy or hard it is for a new player to enter.
- 4Assess the threat of substitutes: what alternative solutions customers could use instead.
- 5Assess the bargaining power of suppliers: how much leverage they hold over the industry.
- 6Assess the bargaining power of buyers: how much leverage customers hold over pricing and terms.
- 7Combine the five assessments to judge the industry's overall attractiveness.
- 8Draw out the strategic implication: where and how to position within, or whether to enter, the industry.
Try it yourself
Analyse the industry your venture competes in using the five forces.
Five forces assessment
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When to use it
- Before deciding whether to enter a new industry or market segment
- When trying to understand why an industry's profit margins are structurally thin or generous
- Alongside SWOT, to add an external, industry-wide view to an internal one
- When deciding how to position a venture against likely competitive pressure
When not to rely on it
This framework does not prove:
- • It analyses the industry structure, not a specific company's internal strengths or execution
- • Industries can be defined too broadly or too narrowly, changing the conclusions significantly
- • It offers a snapshot and can miss how quickly digital industries restructure
- • It does not tell you exactly what to do, only where structural pressure is coming from
Common mistakes
- Using it to describe one competitor instead of the industry as a whole
- Defining the industry boundary too broadly, which blurs every force's assessment
- Treating all five forces as equally important in every industry, when their weight varies by context
- Stopping at description without drawing out a clear strategic implication
Connections
Related concepts
Related frameworks
Quick check
What does Porter's Five Forces framework primarily analyse?
Remember this
Analyse the industry's structure, not just your own company, to understand real competitive pressure.