Yes, I believe this was the implication.
>What problems would that solve?
Giving the right to shoot down drones, in limited circumstances, to property owners would solve the following problems:
1. Prevent using a drone in violation of property, privacy and other laws;
2. Provide a negative incentive to potential violators.
Basically, same motivation and reasoning as self-defense laws.
The drones to be shut down would be drones violating the law.
Rephrasing your question in application to self-defense laws: "Am I implying it would be a good policy to start shooting people?" - the many existing self-defense laws say yes.