Glossary → Total addressable market (TAM)
The total revenue opportunity available if a product captured every potential customer in its market.
Total addressable market, or TAM, is the full revenue opportunity for a product if it reached every possible buyer. It is usually narrowed into the serviceable market you can realistically reach and the share you can realistically win, but TAM sets the ceiling for the whole exercise.
TAM matters for strategy and fundraising, but it is not static. New entrants, repositioning and adjacent products all reshape who is competing for the same buyers.
Keeping a current read on who is in your market, and how they are positioning, is part of sizing it honestly. RivalDesk tracks competitor moves so your view of the field stays current rather than frozen in a slide.
RivalDesk puts a team of AI analysts on your competitors so the concepts in this glossary become a weekly briefing, not a research project.