Market opportunity sizing and prioritisation

How a workspace sizes market segments with a method and cited sources, shows the buyer questions and competitors in each, and turns the openings into ranked plays.

Published 17 September 2026Updated 27 October 20264 min readRead as markdown
  • Market opportunity analysis
  • Market sizing
  • Playbook
A market segment in a Haycion workspace, with example data: its market size and growth rate, how often AI assistants name the client for its buyer questions, the questions with who was named instead, and the competitors in the segment.
One segment, as the workspace shows it: sized, with what its buyers ask, whether AI assistants name the client, and who competes there. Example data.

Sizing is the start, not the point

Market sizing is table stakes in a strategy deck and almost never decides anything. The number is too large to act on, the method is buried in a footnote, and the client’s real question is not “how big is the market” but “where in it can we win, and against whom”.

A Haycion workspace does the sizing properly and then keeps going. Segments are sized with a method and sources you can show. Each segment shows what its buyers ask and who competes there. And the Playbook turns all of it into ranked plays: where to sell against each rival, and what to buy to close a gap.

Segments with a method

The workspace identifies the segments the client sells into and sizes each one. Every segment carries a market size, a growth rate, the buyer’s job in that segment, the method used to estimate the size, and the public sources it was drawn from. One segment is marked as the headline theme: the one the client’s own story leads with.

That transparency matters because market sizes are argued about. A number with its method and sources next to it is a number a client can adopt, adjust or reject on the merits, instead of one they nod at and forget.

What buyers ask, and who answers

Open a segment and the workspace shows what buyers there want: the buyer questions asked in that segment, and whether AI assistants name the client when they answer, from memory and in Google’s AI answers. It shows who competes there, with the direct competitors counted, and which of the client’s own products fit the segment.

That is where the market analysis and the competitive analysis meet. A segment that is growing, where the client’s products fit and the assistants name someone else, is an opening worth naming.

From segments to plays

The Playbook names those openings as plays. A play is on one of two sides: sell, to win against a rival, or buy, to close a gap that rivals score higher on. Each play carries its source (the market, the SWOT, visibility, the battlecards or the client’s offering), the reasoning, and one next step.

The reasoning is built from facts the workspace has stored: a segment’s size and growth, a Strength Matrix score, a buyer-question result. A play quotes only the numbers and names in those facts, so every figure in it traces back to a row you can open. The next guide covers the plays in full.

Vendor research from a brief

Sometimes the opportunity question runs the other way: not “where can this client win” but “who could win this buyer”. For that, a written requirements brief starts a vendor research run. The workspace finds vendors that meet the brief, scores each on weighted criteria you set, and ranks them. A self-assessment turns the same engine on the client: it scores the client against the competitors you choose, criterion by criterion, and you can publish it on the client’s AI agent profile.

What the client receives

How it shows its work

Every market size has its method and sources beside it. Every play cites the facts it was built from, and its numbers come from those facts, not from the model. When the client asks “why this segment”, the answer is the segment’s size, its growth, the questions its buyers ask and who the assistants name instead, all on one page.

What a result looks like

A typical run names a handful of segments and one headline theme. The plays that matter most are usually obvious once they are written down: a segment that is growing, where the client’s products fit, and where buyers asking an AI assistant hear a competitor’s name instead of the client’s.

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Questions advisors ask

Where do the market size numbers come from?

From public sources found by live web search. Each segment shows the method used to estimate it and the sources it was drawn from, so you can check the number before you use it.

What is the difference between a segment and a play?

A segment is a slice of the market with a size and a growth rate. A play is a next step for the client: where to sell against a rival, or what to buy to close a gap, with the evidence behind it and one action.

How are the openings prioritised?

The Playbook ranks the plays. Each one cites the facts it was built from, such as a segment's size and growth, a Strength Matrix score or a buyer-question result, and quotes only the numbers and names in those facts.

Can I run a market scan without a client site?

Yes. A written requirements brief starts a vendor research run: the workspace finds the vendors and scores them on weighted criteria. A self-assessment does the reverse, scoring the client against the competitors you choose.

Do the plays update on their own?

They are rebuilt when you rebuild the workspace, from what the workspace knows at that moment. Run a rebuild after the market or the competitors move.