“TAM measures how big the market is. TAV asks how broken the system is—and whether you can earn trust within it.”
Startup advice often follows a familiar sequence: spot a need, size the market, launch an MVP and scale fast. But in complex markets, a large opportunity does not guarantee that people will trust or adopt your solution. TAV—Total Addressable Void—offers a different starting point: look for the fracture in the system, understand who it affects, then build in a way people can trust.
1. TAV: Observe the fracture
A visible customer problem may be only a symptom. The deeper issue could be unreliable infrastructure, exclusionary rules, weak consumer protection or a lack of trusted intermediaries.
Action items:
- Ask customers what repeatedly breaks, delays or excludes them.
- Map the people and institutions shaping the problem.
- Separate the unmet need from the system failure underneath it.
2. TAV: Understand the void
Market size estimates potential demand; they do not show whether a venture fits its context. Research on organisational legitimacy explains why acceptance depends partly on whether people see an organisation’s actions as appropriate. New ventures also rely on legitimacy to gain resources and grow, as Zimmerman and Zeitz argue.
Action items:
- Identify whose approval, cooperation or confidence the venture needs.
- Ask what might make customers, partners or regulators hesitate.
- Test whether the opportunity fits local expectations and realities—not just a spreadsheet.
3. TAV: Build trust before traction
An MVP can show that a product works. It may not show that the venture is dependable, safe or committed to the people it serves. In a trust-sensitive setting, credible partners, transparent practices and reliable service can be part of the solution itself.
Action items:
- Make one clear promise and deliver it consistently.
- Address the risks customers worry about, such as data, payments or service continuity.
- Seek a credible local partner or endorsement before pushing for rapid growth.
For a related read, see “Why a Good Opportunity Is Not Enough”. You can also watch videos from Dr Glory’s YouTube channel.
Conclusion
The logic shift is simple: move from need → market size → speed to system fracture → institutional fit → earned trust. TAV does not replace market sizing. It adds the questions market size leaves unanswered: what is broken, who must believe in the solution, and how will the venture earn that belief?
