Market Segments and Entry Sequence

When you're weighing a candidate market, keep five things side by side: demand, headcount, geography, existing options, and price. Behind those, three concrete questions do most of the work. What problem are these people actually living with? Where do you meet them? And what are they currently paying to get around it?

Amazon is the familiar example. The 1997 shareholder letter made the case for starting online with books: a much larger selection, search and browsing that made choosing easier, and the ability to buy at any hour. Those fit together around a single activity, finding and buying books. Around that one activity the company could organise a single clean purchase process, and the customer could see at a glance where the improvement was. The improvement was visible in the buying process.

The boundary of a starting market can be drawn around a shared task, a product category, or a buying situation. The line itself matters less than whether demand, the entry route to customers, and the delivery plan line up so that the same scarce resources keep completing the same valuable transaction.

Market size can be worked backwards from the transaction. How many transactions do you need, given the unit contribution each one leaves and what it costs to win one? Then examine the reachable market and your delivery capacity: how many reachable people there really are, when they buy, whether your delivery can keep pace. If the pool is thinner than hoped, other levers gain weight, repeat purchases, bigger order values, leaner operating costs. A market that sounds large but can't be reached is only a story.

A shared context does quiet work. Product descriptions tighten, delivery arrangements simplify, and customer feedback clusters around one thing instead of scattering across ten. Repeatedly solving the same problem is also how you build results you can point at and delivery that stays steady when volume climbs.

Assess the focus by checking whether transactions repeat and how delivery and customer acquisition costs change.

The same 1997 letter makes the point from the other direction. It described investment in warehouses and systems and announced a plan to add music. That sequence matters: the customers, the name recognition, the buying process, and the delivery capability accumulated around books became a list of assets to audit one by one before committing to the next category.

Entering an adjacent market is a different decision, better made as a checklist. How much of the existing customer relationship travels? Which channels, content, inventory, or delivery capability applies as-is? The more that travels, the clearer the new spending becomes. Whatever doesn't travel is new, with its own demands and costs that should be recorded separately.

Naming a group is easy; saying why they'd buy from you is harder. Begin with positioning, the reason this person should get this from you rather than from what they use today. Then let what real customers actually pay for decide whether the scope survives. Before moving on, write down what the first transactions were like: the shared situation, the entry point you used, what delivery cost. That record tells you more about who to serve next than any label you attach to the group. Reading route: From Finding Customers to Making Money.