Strategize Declining Industry logo

Strategize Declining Industry

Community
gnurio
strategize-declining-industry

Choose an end-game strategy for declining industries using Porter's framework. Use when demand is structurally shrinking, industry is contracting, or firms are exiting.

Overview

Publishergnurio
Repositoryporter-strategy-skills
Skill namestrategize-declining-industry
Stars
62
Forks
4
Bundled files
1
Links
  • Markdown instructions

    A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.

  • Works with any LLM

    AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.

  • 1 bundled files

    Scripts, templates, and references the model can read while it works. Files are read-only and never executed.

  • Open source

    Published by gnurio on GitHub. Read the source before you install it.

Installation

Install the Strategize Declining Industry AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

1

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

  1. Open the app and go to Plugins → Skills.
  2. Choose "Install from GitHub".
  3. Paste the skill folder URL below and confirm.
    https://github.com/gnurio/porter-strategy-skills/tree/main/skills/strategize-declining-industry
  4. Enable the skill in any chat where you want it available.
Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.
2

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills
git clone --depth 1 https://github.com/gnurio/porter-strategy-skills.git /tmp/porter-strategy-skills
mkdir -p .claude/skills
cp -r /tmp/porter-strategy-skills/skills/strategize-declining-industry .claude/skills/strategize-declining-industry
Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Strategize Declining Industry in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Strategize Declining Industry on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Strategize Declining Industry is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

  • Loaded only when it is needed

    The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.

  • Switch models mid-chat

    Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Strategize Declining Industry

Choose an end-game strategy (Leadership, Niche, Harvest, or Divest) by matching the hospitability of the declining industry against the firm's relative competitive strengths.

Input

  • Industry diagnosis from diagnose-industry-type confirming structural decline
  • Firm's competitive position: assets, strengths, market share, exit barriers
  • Cause of decline (substitution, demographic shift, regulatory change, etc.)

Output

  • Decline hospitability rating (hospitable / inhospitable) with factor-by-factor assessment
  • Exit barrier profile for each significant competitor
  • Recommended end-game strategy with rationale
  • Tactical steps for executing the chosen strategy

Procedure

Step 1 — Assess Decline Hospitability

Rate each factor as hospitable or inhospitable:

FactorHospitableInhospitable
Uncertainty of demandFirms are certain decline will continue; inefficient firms plan orderly withdrawalFirms perceive hopes of revitalization; competitors hang on, sparking warfare
Nature of remaining demandRemaining pockets are price-insensitive (e.g., replacement parts), immune to substitution, buyers lack bargaining powerRemaining demand is commodity-like, price-sensitive, threatened by further substitutes
Exit barriersLow across the industry; capacity leaves the market in orderly fashionHigh; firms are trapped, capacity stays, competition intensifies
Volatility of rivalryDifferentiated products, low fixed costs, few competitorsCommodity products, high fixed costs, many equally balanced firms, high strategic stakes

Overall verdict: hospitable if most factors align favorably. Inhospitable if firms are trapped and warfare is likely.

Step 2 — Analyze Exit Barriers for Each Competitor

For every significant competitor, assess:

  1. Specialized assets — Is equipment highly specialized with low liquidation value, or can it be sold (including to overseas markets)?
  2. Fixed costs of exit — Labor settlements, contract cancellation penalties, spare parts obligations?
  3. Strategic interrelationships — Is the business central to corporate identity? Does it share facilities or distribution channels with other divisions?
  4. Vertical integration — Will closing this unit force closure of upstream or downstream facilities?
  5. Managerial/emotional barriers — Intense pride or loyalty preventing rational exit?
  6. Government/social restrictions — Will government or community pressure block exit to prevent job losses?

Predict: who will exit quickly, who will remain, and who will fight bitterly.

Step 3 — Assess the Firm's Own Position

  • What are the firm's exit barriers (same six factors)?
  • What are the firm's relative strengths for the remaining pockets of demand? (These may differ from strengths that mattered earlier in the industry's life.)
  • Does the firm have credibility to prompt competitors to exit?
  • What are the firm's overarching strategic needs (e.g., need for cash flow) that may skew the decision?

Step 4 — Select End-Game Strategy Using the 2x2 Matrix

Has Strengths for remaining demandLacks Strengths for remaining demand
Favorable industry structureLeadership or NicheHarvest or Divest Quickly
Unfavorable industry structureNiche (shrink into protected segment) or HarvestDivest Quickly
The Four Strategies
  1. Leadership — Become the only (or one of few) remaining firms. Prompt competitors to exit through aggressive pricing, acquisitions, or capacity signaling. Once dominant, switch to holding position or controlled harvest. Requires: favorable industry structure AND competitive strengths AND credibility to prompt exits.

  2. Niche — Create or defend a strong position in a specific, stable segment. Works in favorable industries (choose the best segment) and can work in unfavorable industries if the firm shrinks into a highly protected pocket. Requires: strengths in a particular segment where demand is durable.

  3. Harvest — Controlled disinvestment to optimize cash flow. Ultimately sell or liquidate. Two categories of tactics:

    • Visible actions: Raise prices, reduce models, shrink channels, erode service (delivery time, repair speed, sales assistance). Only viable if the firm has genuine past strengths (brand loyalty, goodwill).
    • Invisible actions: Defer facility maintenance, drop marginal accounts. Firms without strong market positions must confine themselves to invisible actions only. Requires: genuine past strengths to live on, and an environment that does not degenerate into bitter warfare. Warning: administratively very difficult — devastates employee morale and retention, destroys supplier/customer confidence, and offers terrible motivation for executives managing the "dog."
  4. Divest Quickly — Liquidate the investment as early as possible in the decline phase. Divesting early maximizes asset resale value before the decline is universally recognized. Best when: firm lacks strengths AND industry structure is unfavorable. Consider divesting even before decline is obvious if forecast is confident.

Step 5 — Overlay Strategic Needs

A firm's corporate-level needs (cash flow requirements, portfolio balance, identity considerations) may override the matrix. For example, cash flow urgency may push toward Harvest or Divest even when the matrix suggests Leadership.

During synthesis, consult reference.md for Porter's heuristics on decline; before finalizing, check its failure modes.

Output Template

## End-Game Strategy: [Industry Name]

### Decline Hospitability Assessment
- Uncertainty of demand: [hospitable/inhospitable] — [rationale]
- Nature of remaining demand: [hospitable/inhospitable] — [rationale]
- Exit barriers (industry-wide): [hospitable/inhospitable] — [rationale]
- Volatility of rivalry: [hospitable/inhospitable] — [rationale]
- Overall: [HOSPITABLE / INHOSPITABLE]

### Competitor Exit Barrier Profiles
| Competitor | Specialized Assets | Fixed Costs | Strategic Ties | Vertical Integration | Emotional | Gov't | Likely Action |
|------------|-------------------|-------------|----------------|---------------------|-----------|-------|---------------|
| [Name]     | [H/M/L]          | [H/M/L]    | [H/M/L]       | [H/M/L]            | [H/M/L]  | [H/M/L] | [Exit/Stay/Fight] |

### Firm's Position
- Exit barriers: [summary]
- Strengths for remaining demand: [summary]
- Credibility to prompt exits: [Y/N — why]
- Strategic needs override: [if any]

### Recommended Strategy: [LEADERSHIP / NICHE / HARVEST / DIVEST QUICKLY]
Rationale: [2-3 sentences linking hospitability + firm position to strategy choice]

### Tactical Steps
1. [Action]
2. [Action]
3. [Action]

Worked Example: Vacuum Tube Industry (1960s-1970s)

Hospitability: Inhospitable. Transistors were a clear substitute, but remaining demand (replacement tubes for existing equipment, color TV sets in early years) created uncertainty about the pace of decline. High fixed costs of manufacturing. Assets highly specialized.

Competitor exit barriers: Most firms had specialized plant with low liquidation value. Raytheon had low emotional barriers and sold assets early (early 1960s) when color TV demand was strong, recovering high value. Firms that waited until the 1970s found few buyers and weak bargaining position.

Firm position (Raytheon): Had relative strength in early period but recognized decline trajectory. No strategic interrelationships tying them to the business. Low emotional barriers.

Strategy chosen: Divest Quickly. Raytheon sold its vacuum tube assets in the early 1960s, recovering substantial liquidation value. Firms that stayed faced an increasingly inhospitable environment as overseas producers entered with lower cost structures and remaining demand eroded further.

Key lesson: Divesting early — before decline was universally recognized — maximized asset value. Waiting destroyed bargaining position.

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

Frequently asked questions

What does the Strategize Declining Industry AI skill do?

Choose an end-game strategy for declining industries using Porter's framework. Use when demand is structurally shrinking, industry is contracting, or firms are exiting.

Why use Strategize Declining Industry on TypingMind?

Because you install it once and use it with any model. Strategize Declining Industry is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Strategize Declining Industry in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/gnurio/porter-strategy-skills/tree/main/skills/strategize-declining-industry. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Strategize Declining Industry?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Strategize Declining Industry?

As many as you like. As long as a model supports skills, you can use Strategize Declining Industry with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Strategize Declining Industry AI skill free?

It is published on GitHub by gnurio. Check the repository for licensing terms. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

View all

Set up your own AI workspace now

Get notified about new features and future giveaways by subscribing to our newsletter 👇