On the bright side the technology works so we now know that a Patriot can deal with all sorts of flying threats.
Still, if there is a problem with small commercial & toy drones, perhaps there should be a more economical weapon developed to take them out of the sky. Perhaps one of the radio transmitter jammers the military already owns can disable them? Certainly a 12 gauge would be effective, as long as the drone is within "Pheasant & Quail" range.