You don't need any tech to solve this problem. Simply buy two drones.

I'd estimate one falcon costing easily $100K annually, compared to a $300 consumer drone.

The entire concept is incredibly expensive, doesn't scale and comes with no guarantees, but is certainly loved by the media.

Radio signal hijacking and GPS jamming would solve virtually all non-military drone events. But companies pursuing this rarely get a single mention in the news for the actual advances being made in counter drone technology.