The Russians are using that technology in Ukraine. I posted a story about the Ukes recovering one with a 10 kilometer fiber optic wire.
The Ukrainians have just announced their own version of the wired drone.
This is accessible tech for anyone who has been making wire guided atoms.
Given that, I expect laser communication at some point. Many atgms use that already. That should be good for 10km, the conditions permitting.
The other interesting tech is the aerial WiFi repeater, already in use.