The image they show looks like crap, who would want that image anyway?
I can see the potential for this, and have been actively looking into it for my own companies use, but the cost just completely outweighs the demand right now (in my market segment)
I've looked in to the Panono ball (creates 3D image at apex of parabolic motion, but low res camera, no ISO suitable for receptions) , Drones, Copters etc. all are a new twist to photography but with the weight of a modern dSLR and lens are prohibitively expensive.
I'd have to buy a drone, outfit it to work with a modern dSLR, pay someone to fly it and take pictures, since I can't do it myself as I'm actively busy during a wedding day taking images myself. $400 for 30min is likely about right.