The Deck Catalog · Business & Economics · Strategy · Vol. VII · Deck 10
Special Issue · Strategy · May 2026
The Art of Strategy.
From Porter's Five Forces to Christensen's disruption, from Blue Ocean to jobs-to-be-done — twelve frameworks for the question every business eventually faces: where to play, and how to win.
A primer · Volume VII, No. 10 · The Deck Catalog
In this issue
- What is strategy? — Porter's argument
- The Five Forces
- The three generic strategies
- The value chain
- The BCG matrix and Ansoff's box
- Christensen's disruption theory
- Blue Ocean — Kim & Mauborgne
- Jobs to be Done — Theodore Levitt to Anthony Ulwick
- Resource-based view — VRIO
- Case · Apple's wedge into mobile
- Case · Nokia's collapse
- Reading & viewing
01 · The Question
What is strategy?
Michael Porter, in his 1996 HBR essay "What Is Strategy?", argued that operational effectiveness is not strategy. Doing the same things better than rivals is necessary; it is not sufficient. Eventually competitors converge on the same best practices, and the industry's profit pool drains.
Strategy, for Porter, is the deliberate choice of a different set of activities to deliver a unique mix of value. Southwest Airlines doesn't try to be a slightly cheaper American Airlines. It chose point-to-point flying, single aircraft type, no meals, no seat assignment, fast turnaround. Each piece reinforces the others. Imitating one element is useless; imitating all of them is, in practice, impossible without abandoning the rival's existing model.
The essence of strategy, Porter wrote, is choosing what not to do.
"The essence of strategy is choosing to perform activities differently than rivals do." — Michael E. Porter, HBR 1996
02 · The Five Forces
Porter's industry analysis
Published in 1979, refined for decades. The five forces determine the long-run profitability available to participants in an industry. Strong forces compress margins; weak forces enable durable returns.
Some industries are structurally attractive. Pharma at patent-protected scale ran 25%+ ROIC for decades. U.S. airlines, by contrast, have lost more money cumulatively than they've made — high rivalry, powerful labor (suppliers), substitutes (Zoom), and price-conscious buyers all converge.
03 · The Three Generic Strategies
How to win
Porter's 1980 trilemma: a firm must choose cost leadership, differentiation, or focus. Trying to do all three results in being "stuck in the middle" — not cheap enough for cost-buyers, not special enough for premium-buyers.
| Strategy | Source of advantage | Examples | Risk |
| Cost leadership | Lowest production cost in industry | Walmart · Costco · Ryanair · Vanguard | Margin compression; tech disruption |
| Differentiation | Unique value worth premium price | Apple · LVMH · Tesla · Disney | Imitation; brand erosion |
| Focus (cost or diff.) | Excellence in narrow segment | In-N-Out · Trader Joe's · Hermès | Segment shrinks or shifts |
"Stuck in the middle is almost a guarantee of low profitability." — Michael E. Porter, Competitive Strategy, 1980
04 · The Value Chain
Where the profit lives
Porter (1985) decomposes the firm into five primary activities (inbound logistics, operations, outbound logistics, marketing & sales, service) and four supporting activities (procurement, technology, HR, infrastructure). Each is a candidate site of competitive advantage.
The chain forces the strategist to ask: which links create distinctive value? Apple's chain integrates retail (Apple Stores), software (iOS, services), silicon (M-series chips), and design at a depth no rival matches. Dell's pre-2000 chain delivered cost advantage through direct sales and just-in-time assembly. Same industry, different chains, different profits.
The "smile of value capture" — Stan Shih's term — describes the U-shaped curve of where industry profits accrue. The middle of the chain (assembly, manufacturing) typically earns thin margins. The ends (R&D / brand on one side, distribution / service on the other) earn the bulk. iPhones are designed in California, manufactured in Vietnam and China, sold globally — and ~80% of the profit pool sits with Apple.
Strategy that accepts the existing chain plays defense. Strategy that re-architects it (Netflix vs. Blockbuster, Amazon vs. retail) plays offense.
05 · BCG and Ansoff
Two old workhorses
The BCG Matrix · 1970
Bruce Henderson's 2×2 of growth × market share. Stars (high/high) get investment. Cash cows (low/high) fund the portfolio. Question marks (high/low) need a decision: invest hard or divest. Dogs (low/low) get harvested or sold.
Critique: market share is not always the right axis (services and platform businesses can be small-share and highly profitable). Growth as a single axis ignores defensibility. Still useful as a portfolio-allocation conversation starter.
Ansoff's Matrix · 1957
The growth grid. Existing vs. new product × existing vs. new market gives four growth strategies:
Market penetration (existing/existing) — sell more of what you have to who you sell. Market development (existing/new) — same product, new geography or segment. Product development (new/existing) — new product to current customers. Diversification (new/new) — both new. Highest risk, highest variance.
06 · Disruption
Christensen's innovator's dilemma
Clayton Christensen's 1997 book examined why successful incumbents — disk drives, steel, retail — repeatedly lost to seemingly inferior new entrants. The answer was unsettling: these incumbents lost because they were well-managed, not despite it.
Disruption begins at the low end (or in a new market) where the entrant's product is "good enough" for under-served or non-customers. Incumbent profitability sits at the high end of the market. Customers there don't want the new product; it lacks features. So the incumbent rationally ignores the low end.
The disruptor improves on its own trajectory. Eventually it reaches mainstream "good enough" — and the incumbent finds itself defending only the smallest, highest-end segment, with a cost structure built for the whole market.
Examples
- Disk drives. 8" → 5.25" → 3.5" → 2.5" → SSD. Each transition killed the incumbent leader. Six waves; only IBM survived all of them, and barely.
- Mini mills vs. integrated steel. Started in rebar (no one wanted to compete on rebar). Moved up. By 2000, owned everything but the highest-grade automotive sheet.
- Toyota in U.S. autos. Started with the Corolla — small, cheap, "for poor people." Detroit ceded the segment. Twenty years later, Toyota was selling Lexus to Cadillac's customers.
"Companies fail because they listen too much to their best customers." — Clayton Christensen, The Innovator's Dilemma
07 · Blue Ocean
Kim & Mauborgne · create the market
W. Chan Kim and Renée Mauborgne, 2005. The metaphor: most strategy is "red ocean" — fighting in existing market space, where competition has bled the water. The alternative is to create new market space — uncontested — by reconstructing buyer value.
The mechanism: the four actions framework. For any industry, ask:
- Eliminate — which factors that the industry takes for granted should be eliminated entirely?
- Reduce — which should be reduced well below industry standard?
- Raise — which should be raised well above?
- Create — which factors should be created that the industry has never offered?
Cirque du Soleil
Eliminated: animals, star performers, multiple show rings. Reduced: fun, thrill, danger. Raised: unique venue, artistic music & dance. Created: theme, refined environment, multiple productions. Result: an entirely new market between circus and theatre, charging Broadway prices and growing where the circus industry was contracting.
08 · Jobs to be Done
What is the milkshake for?
Theodore Levitt's 1960 line: "People don't want a quarter-inch drill. They want a quarter-inch hole." Christensen developed the idea into jobs to be done theory: customers "hire" products to make progress on a job in their life, in their context.
The famous study: a fast-food chain wanted to sell more milkshakes. Demographic surveys went nowhere. Christensen's team interviewed people who actually bought one. The pattern: 40% of milkshakes were bought before 8 AM, by men driving to work, alone.
Why? The job was "make my long, boring commute less boring, and tide me over until lunch." Bagels were too crumbly; bananas gone in three minutes; a milkshake took 20 minutes through a thick straw — perfect. The competitors weren't other milkshakes. They were boredom and breakfast.
Implications: thicker shakes, faster line, breakfast pricing. The chain doubled morning shake sales.
Practical jobs-to-be-done interviews follow a structure (Anthony Ulwick's Outcome-Driven Innovation, Bob Moesta's Demand-Side Sales): map the timeline of decision, the push/pull/anxiety/habit forces, and the moment of switch.
09 · Resource-Based
VRIO · what's actually defensible
Jay Barney's 1991 framework. A resource (or capability) yields sustained competitive advantage only if it is:
- Valuable — exploits opportunities or neutralizes threats
- Rare — not widely held by competitors
- Inimitable — costly or impossible for rivals to replicate
- Organized — the firm is set up to exploit it
A merely valuable but common resource (skilled labor in tech) yields competitive parity. Valuable + rare yields temporary advantage. Add inimitable, and the advantage is durable. Add organized, and it actually gets captured as profit.
Apple's design culture, Berkshire's capital allocation, Toyota's production system, Pixar's story-development process — all VRIO-positive. Each took decades to build and would take decades to replicate.
10 · Case
Apple's wedge into mobile
January 9, 2007. Steve Jobs onstage at Macworld: "Today, Apple is going to reinvent the phone." A widescreen iPod, a phone, and a breakthrough internet communicator. "These are not three separate devices. This is one device."
By every Five Forces measure, the phone industry was hostile. Carriers held distribution. Nokia and Motorola owned hardware. RIM owned enterprise. Margins were ~10–15%.
Apple's strategy did three unusual things at once:
Vertical integration. Owned chips (eventually), OS, hardware, retail, content (iTunes, App Store). The chain was designed for one product, not licensed.
Differentiation, not cost. Started ~$500 unsubsidized — 2× competitors. Premium pricing by design.
Captured the carrier rents. AT&T exclusivity in exchange for revenue share — Apple, not the carrier, owned the customer.
By 2024, Apple captured ~85% of global smartphone profits with ~20% of unit share. The most successful new-product wedge in business history.
11 · Case
Nokia · the cliff
In 2007, Nokia made 51% of the world's smartphones, ran the most profitable handset business of all time, and held a market cap of $150B+. By 2013 it sold its devices business to Microsoft for $7.2B. By 2016 the brand had to be relicensed.
The internal explanation, told in Yves Doz and Keeley Wilson's Ringtone (2018), is multi-causal. The platform — Symbian — had been bolted together over a decade and could not absorb capacitive touch and modern app developers. The org structure had matrixed itself into paralysis. Performance bonuses incented the launch of more SKUs, fragmenting development.
The strategic blind spot: Nokia treated the iPhone (and Android, when it arrived) as a niche premium player it could ignore — exactly the disruption fingerprint Christensen had named a decade prior. By the time Nokia accepted that the basis of competition had shifted from hardware to ecosystem (apps, developers, services), the moat was gone.
Stephen Elop's "Burning Platform" memo (Feb 2011) acknowledged it openly. The Microsoft alliance and Windows Phone bet was rational ex ante but uncompetitive ex post. The company that had survived 150 years (rubber boots, paper, cables, phones) lost an industry in five years.
Lesson: in industries where the basis of competition shifts, the leader of the prior era is structurally the most likely loser of the next.
"We poured gasoline on our own burning platform." — Stephen Elop, Nokia CEO, internal memo, 2011
12 · Reading
What to read & watch
Books
Porter — Competitive Strategy (1980), Competitive Advantage (1985)
Christensen — The Innovator's Dilemma (1997), The Innovator's Solution (2003)
Kim & Mauborgne — Blue Ocean Strategy (2005)
Rumelt — Good Strategy, Bad Strategy (2011)
Lafley & Martin — Playing to Win (2013)
Mintzberg — The Rise and Fall of Strategic Planning (1994)
Hamel & Prahalad — Competing for the Future (1994)
Drucker — The Practice of Management (1954)
Doz & Wilson — Ringtone (Nokia post-mortem, 2018)
Sun Tzu — The Art of War (~5th c. BCE)