The funny thing is that (power density) isn't even the only single obvious and insurmountable problem. What about: 1. The fact that carrying larger loads would

The funny thing is that (power density) isn't even the only single obvious and insurmountable problem. What about: 1. The fact that carrying larger loads would make this extremely noisy, making it nearly impossible to use anywhere indoors. 2. Similarly, as another commenter said, if you scaled up the load capacity, then you'd basically be creating a hurricane in any enclosed space. 3. Thus, if all you are left with is outdoor applications, this device compares negatively in nearly every way with a standard delivery aerial drone.