You bring up a good point, and another just like it would be the necessity of each drone having a unique IP and system address making them individually hackable rather than group hackable. Is there sufficient bandwidth for thousands of planes to be controlled remotely with no or little latency. Time will tell.
Unless the UAV controller is in a trailer 100 miles or so from the drone, with ‘line of sight’ coms, you’re gonna have latency.
Yea, you can control a drone from a central control in Missouri, but 23,000 miles up, and 23,000 miles down plus processing handoffs, encryption and decryption of commands, etc... You’re gonna have latency.