TAM / SAM / SOM Analysis

Sizing is always wrong but the discipline is useful. Produce two independent estimates and reconcile.

Steps

1. Read the idea + user context.
2. Identify the buying unit (end consumer, SMB, mid-market, enterprise, developer, etc.) and the geography (global, region, single country).
3. Top-down: cite the broadest plausible industry category, look up published market size (use WebSearch / WebFetch for current figures — do not invent), narrow by relevance percentages with explicit reasoning.
4. Bottom-up: estimate number of buying units × ARPU/ACV × annual purchase frequency. Show every assumption.
5. Reconcile — if top-down and bottom-up are >5x apart, find the error before reporting.
6. Define SAM (the slice the company can realistically reach in its initial geography/segment) and SOM (a credible 3-year capture).
7. Note category dynamics: growing / flat / declining; consolidating / fragmenting.

Output

<workspace_path>/ideas/<slug>/analysis/tam-analysis.md with frontmatter: