You already built this AI receptionist four times. This is the realization that a new business is a config file + a hat, not a new codebase. Click a hat. Watch the same engine become a different company.
The point: nothing in the center panel is code β it's configuration. Marcus, Isabella, Claire, and Jarvis are the same orb wearing different hats. The moat (eating HIPAA + WSLCB + FedRAMP + AML fear) is already paid for. A 5th vertical β "Isabella for dentists," "Marcus for any wholesaler" β is a row in this rack, shipped in an afternoon. The basement is the warehouse.