On the economics and moat: You said that it's cheaper than helicopters but would it be cheaper than manned auto-gyros/gyrocopters? What about military drones and even civilian drones which will benefit from the trillions of dollars being dumped into battery technology, that will make them capable of flying longer distances? Would blimps be competitive against those?
Finally. I want to ask about forest fires, would your blimp have the economics to be used as surveillance tool against forest fires?