There are also now drones with long spooling wires. Regardless, autonomous or not, connectivity to home is important.

I would note that a lot of drones are quite large too - small airplanes. They can carry more than enough hardware for autonomy. You can also have motherships doing planning and smaller kamikaze drones for combat.

These aren’t hard problems to solve, the harder problem is the reluctance to give over to automation. But that’s going to happen faster and faster.