Here's what I think is more likely: A small regional airport is taken over by Amazon. They build hangars and warehouses onsite. It's ramped up to land and fly a big turbine-powered mothership every five minutes. The warehouse dispatches packages to stacks of delivery drones like the one pictured in the video. The mothership loads the delivery drones in order. The motherships take off regularly, and then as the mother…
Seems like a longer wingspan is the simple answer, no?