Building an AI voice agent for service businesses is now a weekend project: managed voice platforms, a workflow orchestration layer, and off-the-shelf integrations. The hard part is everything after. I shipped a working inbound voice agent and a clean landing page, sent outreach to roughly 1,600 qualified businesses, and got zero replies. That number taught me what the engineering never could: when the marginal cost of building the product approaches zero, the product is not the moat. Distributi...