Porter's Five Forces
Porter's Five Forces
What are Porter’s Five Forces?
- Analyzing industry attractiveness with the five forces
- Competitors + entrants + substitutes + buyers + suppliers
- A broader view of 'competition'
The real value of this framework is that it changes the question from 'Can we beat that company?' to 'Is there any profit in this industry to begin with?' Some markets grow 20% a year while most players lose money; others stagnate while a few companies steadily earn 20% operating margins. That difference is set first by industry structure, more than by management skill. That is why, in new-business reviews and investment committees, this analysis is the first gate: it decides 'whether to enter' and, if so, 'which niche to enter through.'
Judge the strength of each force by metrics, not by feel. Read entry threat from the size of the initial capital investment, the time needed for permits, and the level of economies of scale. Read buyer power from the revenue share of your top three customers and their switching costs. Read supplier power from the number of suppliers of key raw materials and the time needed to source alternatives. Be clear about the boundaries, too. If 3C and SWOT are frameworks for looking at 'your company,' then Five Forces looks at the 'industry', so your company’s strengths do not appear here yet. Recent debate about adding complementors (platforms and ecosystems) as a sixth force also stems from the original framework assuming a manufacturing-based industry.
The most common failure in practice is rating all five forces 'medium' and closing the report. Without a strength rating and a response for each force, the meeting stalls at 'So are we doing this or not?' Even riskier is how you define the industry. Define it as the 'coffee industry' and the threat of substitutes looks low; widen it to 'caffeinated drinks' and energy drinks and convenience-store RTDs pour in, flipping the conclusion. Reusing a picture drawn once for three years is also a problem. A single regulation or platform can reverse buyer negotiation power within six months. Unless you name 'the single strongest force right now' and write down how to weaken it, the analysis becomes a document that was completed but never led to a decision.
John KimInstructor John Kim, CEO of Nanum Consulting and author of “B2B Marketing Design”
Kwangdong MinExpert in business models, revenue models, and market researchAn industry analysis framework that Michael Porter of Harvard Business School introduced in a 1979 HBR article.
Let’s look at a hypothetical case. Company A, an industrial packaging manufacturer that makes corrugated boxes, has 240 employees and annual revenue of KRW 62 billion (≈ US$46,386,400). After unit prices on its main product were squeezed for a third straight year, the CEO ordered a new business in eco-friendly cushioning materials, and the strategic planning team spent three months reviewing five candidate product lines.
- When the head of strategic planning pulled three years of audit reports for the top five companies in the candidate market, the average operating margin was 3.1%. In the meeting, they said, "We almost went in looking only at the 18% growth rate."
- When the purchasing manager checked the customer mix, it turned out that three large e-commerce companies accounted for 71% of volume, and that they demanded price cuts of 4–6% every year.
- The head of production objected, pointing out that anyone can set up a line with KRW 4 billion (≈ US$2,992,700) in equipment and that there is no patent barrier: "If Chinese products come in within two years, our cost structure can’t survive."
- Digging into raw materials, the team found only two domestic suppliers of eco-friendly base paper, so supplier power was high. The CEO told them to keep only items that could run on recycled-paper-based materials as candidates.
- In the end, they kept just one: insulated packaging for cold-chain delivery, where switching costs are high because customer quality certification takes six months. They also cut the investment plan from the original KRW 12 billion (≈ US$8,978,000) to KRW 4.5 billion (≈ US$3,366,800) and got it approved.
- One year later, this product line had reached KRW 3.8 billion (≈ US$2,843,000) in revenue, with an operating margin of 11.2%, more than double the existing box business (4.6%). Of the four rejected product lines, two did see competitors enter, and unit prices fell 12%.