| Pre-seed & micro-VC | $10M – $75M | $250M – $1B exits | $500M+ TAM, growing | A niche is fine if the wedge credibly expands |
| Seed funds | $50M – $200M | $1B+ outcomes | $1B+ TAM, $10B preferred | Bottom-up: real buyers × realistic price |
| Multistage SaaS / tech | $500M – $3B+ | $10B+ IPO-scale winners | $10B+ TAM | The path to $100M+ ARR matters more than the TAM slide |
| Vertical SaaS specialists | $100M – $500M | $1B – $5B acquisitions | $1B – $5B TAM is acceptable | High win rate in the vertical plus expansion revenue per customer |
| Deep tech / frontier | $200M – $1B | New categories entirely | $10B+ future market | Cost curves: what becomes possible when the price drops 10x |
| Biotech / life sciences | $250M – $1B+ | Approved drugs at scale | Indication-sized: $1B+ peak annual sales, or orphan with pricing power | Patients × price × penetration, per indication |
| Defense / national security | $100M – $1B | Program-of-record revenue | Budget lines, not TAM slides: programs measured in $1B+ per year | Procurement budgets and a dual-use commercial market on the side |
| Consumer | $100M – $1B | Breakout brands & networks | $10B+ categories, 100M+ potential users | Frequency × spend and winner-take-most dynamics |
| Fintech | $100M – $1B+ | $1B+ outcomes | Revenue TAM: take rate × flows | The classic trap is citing payment volume as your market; they size your cut of it |
| Climate & industrial | $200M – $1.5B | Infrastructure-scale companies | Trillion-scale energy and materials markets | Market size is assumed; unit economics at scale decide everything |