The AI Website Builder Margin Curve: Why Cheap Builds Only Pay Off Above a Delivery Threshold

AI website builders change the unit economics of small-budget client work, but only for agencies that already have a repeatable delivery process. Generation speed is the least defensible part of the stack; white-label control, export rights, accessibility, and content governance decide whether a $1,500 site build earns margin or consumes it. The agencies that win treat the platform as a production line input, not as a substitute for scoping, QA, or revision discipline.