The Framework That Changed Strategy—And Why Most Teams Are Still Getting It Wrong
Porter's Five Forces is one of the most cited frameworks in business strategy. It is also one of the most misused.
In most consulting engagements, it gets reduced to five boxes on a slide, filled with opinions, and presented as "analysis." That is not analysis. That is decoration.
The original framework, developed by Harvard Business School professor Michael E. Porter in his landmark 1979 Harvard Business Review article "How Competitive Forces Shape Strategy", was designed to do something far more powerful: map the structural attractiveness of an industry using evidence. (Harvard Business Review)
When you run it properly—with real client data, traceable evidence, and a clear output—it becomes one of the most powerful tools in your boutique's arsenal.
Here is how to run it the right way, using mmentum's Reason phase.
What Porter's Five Forces Actually Measures
The framework evaluates five structural forces that determine the long-term profitability of an industry:
- Competitive Rivalry: Intensity of competition among existing players.
- Threat of New Entrants: How easy is it for new competitors to enter?
- Threat of Substitutes: Can customers switch to an alternative solution?
- Bargaining Power of Buyers: How much leverage do customers have?
- Bargaining Power of Suppliers: How much leverage do suppliers have?
The output is not a score. It is a strategic narrative about where power sits in the market—and what your client should do about it.
The mmentum Method: Running Five Forces with Evidence
Step 1: Discover (Ingest the Raw Intelligence)
Before you open a framework, feed mmentum the raw client intelligence:
- Industry reports (IBISWorld, Statista, sector-specific research)
- Competitor filings, press releases, pricing pages
- Client's own P&L, customer contracts, supplier agreements
- Transcripts from client interviews or discovery calls
mmentum auto-parses, structures, and embeds everything into a searchable knowledge layer (mmentum). You are not starting from a blank slide. You are starting from structured intelligence.
Step 2: Reason (Run the Framework)
Activate Porter's Five Forces in the mmentum Reason phase. The system maps ingested evidence directly to each of the five forces—every point traceable to the exact source document, page, and paragraph (mmentum).
For each force, the output includes:
- Evidence: What the data says
- Intensity Rating: Low / Medium / High
- Strategic Implication: What this means for your client
Step 3: Execute (Turn Insight into Action)
The Five Forces output feeds directly into your execution plan. mmentum generates dependency-aware 30/60/90-day plans based on the strategic implications identified in the Reason phase (mmentum).
Step 4: Deliver (Export the Client-Ready Output)
Export a native, editable .pptx file with the Five Forces analysis mapped to a professional template. Your client opens it in PowerPoint. No proprietary viewer. No reformatting (mmentum).
Common Mistakes (And How to Avoid Them)
Mistake 1: Filling boxes with opinions
Every point in your Five Forces analysis must be traceable to evidence. If you cannot cite a source, it is an assumption—label it as one.
Mistake 2: Treating all forces as equal
In most industries, one or two forces dominate. Your narrative should reflect this hierarchy.
Mistake 3: Running it once and filing it
Markets change. mmentum's proactive sparring agents continuously compare new data against your existing analysis and flag when the competitive landscape shifts (mmentum).
Founder's Close: Five Forces as a Retainer Engine
Here is the commercial insight most boutiques miss: Porter's Five Forces is not a one-time deliverable. It is a living competitive intelligence asset.
When you run it with mmentum—evidence-linked, traceable, and continuously monitored—you have a compelling reason to stay engaged with your client every quarter. That is how a project becomes a retainer.