what possible reason could that be? surely you can see that having a realtime view from the enemies recon drones would give a military advantage? wonder if they were geotagged...
Well, if you pull up a drone feed and see it looking at you, does it really matter? What are you going to do, pack up your satellite dish and make a run for it? You're still locked up. You can't out-run a hellfire.
Also, troops on the ground have a hard enough time simply having radio comms with jets in their area, being on different frequencies. Want to try a widely dispersed force that needs a rolling encryption key that's changed every day? Not gonna work well. It's about simplicity. Pull up the feed as you need it, instantly, use it, move on.
As for tactical advantage, if I show you a patch of dirt with you standing in it.. what advantage did you just get? You still don't know where my own forces are maneuvering to envelope that spotted position.