Serve Robotics' sidewalk-delivery model looks unlikely to work at scale, and its data moat is weaker than claimed. Without turning streets into something close to an Orwellian surveillance environment, theft, vandalism and security costs will likely make wide deployment uneconomic, worst in dense urban areas. Tesla's FSD data is transferable and already trains Optimus. Uber cut its stake to 2-3%, Starship Technologies looks stronger, and customer DoorDash is building its own robot, Dot. x.comÂ

