Two questions that decide market entry
Beneath the complexity, a market-entry decision reduces to two questions. Where to play: which segments, geographies, or adjacencies deserve investment. How to win: what differentiated right to win the business has once it is there. A method that answers both, in that order, keeps the decision honest.
The failure mode is to answer neither and instead present a confident narrative. A structured approach forces the sizing before the story, so the ambition is anchored in an addressable opportunity rather than in enthusiasm.
Size the opportunity: TAM, SAM, SOM
Sizing begins with the market: total addressable market, the serviceable slice the model can realistically reach, and the share obtainable in a defined horizon. The number that matters is not the largest one, it is the one that is defensible, triangulated from more than one source.
- TAM: the full demand if every relevant buyer were served.
- SAM: the portion reachable given the model and geography.
- SOM: the realistically obtainable share within the horizon.
A sizing that rests on a single source is a guess with a decimal point. Triangulation, top-down and bottom-up, is what makes the number survive the board.
Where to play: screening the options
With the opportunity sized, the options are screened on a common lens. An attractiveness-versus-position view separates the segments worth pursuing from the ones that merely look large. Growth options across products and markets can be laid out on an Ansoff matrix, but the discipline is to carry named, costed initiatives in each quadrant, not labels.
The output is a prioritised shortlist: two or three moves that score highest on attractiveness and fit, each with a revenue potential and a rationale a skeptic can interrogate.
How to win: the right to win
Choosing where to play is only half the answer. The harder question is how to win: the differentiated advantage, value proposition, and capabilities that give a real right to win in the chosen space. A move into an attractive market with no right to win is a way to fund a competitor's learning curve.
This section carries the business case, the P&L build for the prioritised moves, and an honest account of the go-to-market and capability requirements: the channel, the organisation, the partnerships, and the investment the plan actually needs.
Backing every number for the board
A market-entry deck asks a board to commit capital on the strength of estimates. The estimates that get approved are the ones that can be opened: the market size traces to its sources, the share assumption traces to a defined basis, the P&L traces to the drivers beneath it.
Decisity is built so that the numbers in a market model and a go-to-market deck are designed to be clickable to their source. The intent is that when the board asks how a figure was derived, the trail is there, and the ask is judged on evidence rather than on the confidence of the presenter.