market-sizing

# Market Sizing Produces a structured TAM/SAM/SOM market sizing analysis using web research, industry data, and bottom-up calculations. ## When to Activate - User says "calculate TAM", "size the market", "market opportunity" - User asks "how big is the market for X?" - User needs market sizing for a pitch deck, PRD, or business case ## Input Required: - **Product/service description**: What is being sized - **Target customer**: Who buys this Optional: - **Geography**: Default is global - **Time horizon**: Default is current year + 5-year projection - **Methodology preference**: top-down, bottom-up, or both (default: both) ## Execution ### Context Check Before sizing, read `context/product.md` and `context/competitors.md` if they exist. Existing product positioning and competitive landscape inform market definition and assumptions. After completing the analysis, offer to update `context/competitors.md` with market landscape findings. ### Step 1: Define the Market Clarify with the user if ambiguous: - What problem is being solved? - Who are the target customers (segment, size, industry)? - What is the product/service category? - What is the geographic scope? ### Step 2: Research (Parallel) Use web search tools to gather data from multiple sources: | Data Type | Sources to Search | |:----------|:-----------------| | Industry reports | Gartner, Forrester, IDC, Statista, Grand View Research | | Company data | Public filings, ea...