── ── Strategy
Death Spiral
A death spiral is a self-reinforcing negative loop in competitive markets: each deterioration actively causes the next, making decline non-linear and accelerating. Unlike ordinary decline — linear and often reversible — a spiral typically begins when a competitor breaches a company's primary defense, and the response (price cuts, cost cuts, talent loss) feeds the loop rather than breaking it.
Run Death Spiral on a real problem
Bring something you're actually deciding — free, in the browser.
How it works
Step 1 — Audit moat dimensions: Name 3–5 advantages (network effects, switching costs, data, brand, distribution, patents). Rate each: strength (strong/moderate/weak) + trend (stable/eroding/rapidly eroding).
Step 2 — Identify breach conditions: For each moat, name the specific competitor action or tech shift that would establish a durable advantage over it.
Step 3 — Check early-warning signals: Multi-quarter share decline? Rising CAC? Rising churn? Any confirmed = spiral may have started.
When to use it
- user says 'we're losing market share,' 'our growth keeps slowing and I don't know why,' 'a competitor is gaining on us fast,' 'what's the worst-case trajectory here,' or a business shows two or more consecutive quarters of declining key metrics with no identified reversal mechanism
When not to use it
When the decision is routine and reversible, applying a formal method costs more than it returns.
Worked example
Chegg's AI Death Spiral (2022–2026)
Kodak's spiral took eighteen years. Chegg's took three. The education-technology company — a ~$12B business at its 2021 peak, built on a subscription library of textbook answers and expert Q&A — met a technology shift that breached every moat simultaneously: ChatGPT launched November 30, 2022, and gave students a free, instant, general-purpose answer engine. Chegg is the cleanest modern demonstration of the framework because each Process step is visible in SEC filings and earnings calls, quarter by quarter, at 6× Kodak's speed.
Install this skill (free, MIT)
npx skills add deciqAI/knowledge-skillsUseful? Star the repo — stars help other builders find it.
FAQ
How is a death spiral different from ordinary decline?
Ordinary decline is linear: revenue falls, and fixing the cause reverses it. A death spiral is a feedback loop — losing customers forces cuts that degrade the product, which loses more customers. Each step causes the next, so the fall accelerates and standard fixes arrive too slowly to matter.
What typically triggers a death spiral?
A competitor breaching the company's primary defense — price, distribution, or technology — followed by a defensive response that feeds the loop: cutting quality to protect margin, or cutting price to protect share while unit economics collapse. The trigger is external; the spiral is usually self-inflicted.
Can a company escape a death spiral?
Only by breaking the loop, not by optimizing within it. That means an intervention large enough to change the feedback structure — repricing the whole model, retreating to a defensible segment, or replacing the breached defense — accepting short-term pain that gradual measures merely postpone.
Related mental models
Core competence (Prahalad & Hamel, 1990) becomes dynamic when you recognize that competences decay, markets change what they reward, and building sequence matters.
Average cost per unit falls as output rises — fixed costs spread thinner, specialization deepens, and learning compounds.
Emergence: many interacting parts produce whole-level properties that cannot be predicted from the parts alone.
Lieberman and Montgomery's 1988 landmark paper established both the mechanisms of first-mover advantage and, with equal rigor, the mechanisms of first-mover disadvantage that make late entry…