A successful pre-sale answers one question: is there enough demand signal to justify building? When the threshold is crossed, that question is answered. A new question immediately opens: what are you actually building?

The instinct at this point is expansion. You have paying customers; you want to deliver something worthy of their trust. The natural move is to think about everything the product should eventually do and try to build a credible version of that. This instinct is wrong. The people who paid during a pre-sale paid for a specific thing — the thing the pre-sale page described, which was a narrow use case for a specific audience. They did not pay for a roadmap. They paid to have their stated problem solved.

Scope at the threshold should be defined by the pre-sale offer, not by the product vision. If the landing page said “extract structured data from CRE lease documents with source citations,” the v1 build scope is: extract structured data from CRE lease documents with source citations. Not also T12 income statements. Not also rent roll analysis. Not also a dashboard. The people who paid for the lease extraction use case paid for lease extraction. That is what you owe them.

This is harder than it sounds because the builder’s natural bias is toward completeness. A tool that handles one document type feels thin; a tool that handles five feels like a real product. But “feeling like a real product” is not the metric at v1. The metric is: does the specific thing the first cohort paid for actually work? If lease extraction with provenance works reliably, the cohort is satisfied. If you built lease extraction plus three other features and none of them work reliably, the cohort is not satisfied — even though you built more.

The v1 build scope should also be constrained by what can be finished. Founding members are tolerant of imperfection in ways that later buyers are not — but their tolerance has a time horizon. If the thing they paid for isn’t available in a reasonable window, that tolerance expires. A narrow v1 that ships in six weeks is more valuable than a comprehensive v1 that ships in six months, because the founding cohort’s goodwill compounds while they’re waiting and decays once they lose confidence. Shipping narrow and working beats shipping broad and incomplete.

The right framing after a successful pre-sale: what is the smallest thing that fully satisfies the specific use case the founding cohort paid for? Build that. Learn from them. Let the second version be shaped by what they actually needed rather than what you assumed they would need. The pre-sale bought you the right to build; the founding cohort earns you the right to expand.