Porter's Five Forces: who holds the power at your level

The five forces that decide how much profit an industry leaves for you, and the one that matters most at each level of the ladder, with Indian examples.

Where it comes from. Michael E. Porter of Harvard Business School set out the five forces in Harvard Business Review in 1979, in “How Competitive Forces Shape Strategy” (March–April 1979), and restated them in “The Five Competitive Forces That Shape Strategy” (January 2008). Both are on HBR’s site.

What it is

Porter’s point is that your competition is wider than your direct rivals. Five forces together decide how much profit an industry leaves for the businesses in it:

Rivalry among existing competitors. How hard the businesses already in the market fight on price, schemes and service.
The bargaining power of buyers. How much your customers can push your price down or ask for more.
The bargaining power of suppliers. How much the people you buy from can push their price up or set your terms.
The threat of new entrants. How easily someone new can start doing what you do.
The threat of substitutes. How easily customers can meet the same need another way.

The stronger a force, the more of the profit it takes. It is a tool for understanding an industry’s structure, not a single company, so use it on “the business of distributing biscuits in Nagpur”, not on “my firm”.

It is the site’s “who holds the power” question

Across this site we keep asking who holds the power: in OEM or commodity manufacturing, in what a dealership gives and costs and in new platform micro-businesses. The Five Forces is the standard way to answer it. At each level one force usually matters most.

Level	The force that matters most	Why
1 Trader	Buyers	Shops and shoppers can buy the same brand from someone else, so they push for discounts and credit.
2 Dealer	Suppliers (the brand)	The brand gives you the right to sell and sets your margin, targets, schemes and territory.
3 Manufacturer	Buyers (the OEM)	A Tier 1 or Tier 2 supplier (3.3) often sells most of its output to one OEM, which sets prices and asks for yearly price-downs.
4 New products	New entrants and substitutes	A new product has to beat what customers already use, and stay ahead of copies.

When to use it

Before you climb to a new sub-level, to see who will hold the power over you there.
Before you take on a new brand, a new big customer or a new market.
When your margin is falling and you don’t know why: one of the forces has usually got stronger.

Worked example: a distributor’s buyers

Hypothetical A big retailer asks for 1% more

A distributor (1.3) sells ₹50,00,000 a month to a chain of stores and earns a 6% gross margin on it. The chain asks for an extra 1% discount.

Gross profit from the chain today: ₹50,00,000 × 6% = ₹3,00,000 a month
Cost of the extra discount: ₹50,00,000 × 1% = ₹50,000 a month
Share of that gross profit given away: ₹50,000 ÷ ₹3,00,000 × 100 = 16.67%

A 1% discount sounds small, but it is a sixth of what the chain earns you. That is buyer power.

Hypothetical Scoring the five forces for that distributor

Score each force from 1 (weak) to 5 (strong):

Rivalry 3 (two other distributors in town), buyers 4 (a few chains buy a third of the volume), suppliers 5 (one brand sets the margin), new entrants 2 (the brand appoints distributors), substitutes 2 (shops can’t easily stock a different brand).
Total: 3 + 4 + 5 + 2 + 2 = 16 out of a possible 25
The two strongest forces, the brand and the buyers: 5 + 4 = 9 of the 16

So the plan should be about the brand and the buyers: a second brand, more small shops so no chain dominates, and better terms on credit.

The scores are judgements, not measurements. Their use is to make you name the strongest force and do something about it.

The force that matters at each level

Traders (level 1). Buyer power is strongest where you sell a brand anyone can get. Spread your sales over more customers (see customer concentration), add services the buyer values (delivery, credit, small lots), and watch your gross margin.

Dealers (level 2). The brand is a powerful supplier: it sets your margin, targets and schemes, and can appoint another dealer. Your power comes from your location, service quality and customer base. A 3S dealer (2.3) with a strong workshop is harder to replace.

Manufacturers (level 3). For Tier suppliers (3.3), the OEM is a buyer with great power: it sets prices, asks for price-downs and can move orders. See One big customer and OEM pricing. Selling to more OEMs and owning your tooling and know-how shifts the balance.

New products (level 4). New entrants and substitutes matter most. Ask who could copy you in a year and what customers do today instead. Patents, licences, data, brand and switching costs are your defences. See technology transfer and market size.

Common mistakes

Only counting direct rivals. The biggest squeeze often comes from a buyer, a supplier or a substitute.
Using it on one firm instead of an industry. Define the market first (product, place, customers), then score the forces.
Treating it as a one-off. Forces change: a new app, a new rule or a new brand policy can shift power in a year.
Stopping at the scores. The point is to choose moves that weaken the strongest force against you.

Related: SWOT and TOWS for turning what you find into moves, and PESTLE for the wider changes that move the forces.

The framework is Michael E. Porter's, from his Harvard Business Review articles of 1979 and 2008, linked above. The explanation, the level-by-level reading and the examples are ours.