When AI Gets Market Sizing Wrong: A $33 Billion Reality Check
Artificial intelligence-powered market sizing can misrepresent actual...
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Most market sizing exercises answer one question: How big is the opportunity?
They rarely answer the one that matters more: How profitable is it? That gap is where decisions go wrong, and where Strategex introduces Total Addressable Profit (TAP).
The Limitation of Traditional Market Sizing
TAM-SAM-SOM is a widely used framework for estimating market potential. It helps organizations understand total demand, accessible demand, and realistic share. But it has a critical limitation: It focuses entirely on revenue.
Measures that actually drive business value, profit, margin, and cash flow are not included. As a result, companies can pursue large markets that generate growth but fail to create meaningful value. Revenue alone is not a reliable indicator of opportunity. Profitability is.
Introducing TAP: Total Addressable Profit
Total Addressable Profit (TAP) is a simple extension of traditional market sizing. Instead of focusing only on revenue, TAP estimates the total gross profit available within a market or segment by combining:
- Market size (revenue)
- Expected gross margin
This creates a more complete view of opportunity, one that reflects not just scale, but value.
Why TAP Changes the Answer
In a recent engagement, a company identified four adjacent growth opportunities:
- Two geographic expansions
- One previously avoided segment
- One set of ancillary services
Initial analysis suggested all four were attractive. Each had a TAM between $238M and $457M, and appeared similar in terms of:
- competitive intensity
- market access
- brand awareness
- regulatory complexity
The natural inclination was to pursue the largest opportunity. But there was concern around differentiation and pricing power.
When gross margins were introduced into the analysis, the picture changed:
- The largest market (Region 1) had the lowest margins (~25%)
- Ancillary services had the highest margins (~65%)
When converted to total profit, the answer changed immediately:
- Ancillary services, despite being smaller, delivered greater total profit than the largest market
- It generated 13% more profit than Region 1
- And nearly 2x the profit of another similarly sized segment
This insight fundamentally changed the company’s strategy. They shifted focus to ancillary services, building capabilities that increased customer loyalty and expanded margins.
The largest market was not the best opportunity.
TAP made that clear.
Where TAM Alone Falls Short
Traditional market sizing can mislead in several ways:
- Overlooking Profitability Differences: Markets with similar revenue potential can have dramatically different margin profiles.
- Oversimplifying Market Reality: Expansion opportunities often require new capabilities, longer sales cycles, or greater investment than initially assumed.
- Relying on Unrealistic Assumptions: TAM and SOM estimates are frequently inflated, especially under pressure to support valuation narratives.
- Using Incomplete or Subjective Data: In less-defined markets, companies may rely on proxies or assumptions that don’t reflect actual conditions.
Why TAP Matters
TAP introduces a critical dimension to market evaluation, value creation. It enables better decisions in areas that matter most:
- Deal thesis validation
Is growth actually profitable? - Capital allocation
Where should investment be prioritized? - Value creation planning
Which opportunities will drive margin expansion? - Exit positioning
Which revenue streams improve valuation multiples?
By shifting the focus from revenue to profit, TAP helps companies avoid pursuing “busy” growth and instead prioritize high-value opportunities.
How TAP Is Built
TAP does not require perfect data; it requires informed estimates. Gross margin insights can be developed through:
- customer and channel interviews
- competitor intelligence
- pricing analysis across the value chain
- reconstruction of P&L economics
- internal cost data
Once margin estimates are established, TAP can be calculated quickly and compared across segments.
A Better Way to Size Opportunity
TAM-SAM-SOM remains a useful framework. But on its own, it is incomplete.
Total Addressable Profit adds the dimension that matters most—profitability, and transforms market sizing from a theoretical exercise into a practical tool for decision-making. Revenue shows potential. Profit determines value.
Organizations that incorporate TAP into their analysis make better strategic choices, allocate capital more effectively, and build more valuable businesses.
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