Just imagine a "tech engineer" operating UAV 777's around the globe from the comfort of a control center in Memphis. Mngt's dream, no duty times, no fatigue issues, not paying pilots...think of all the hazmat rules that wouldn't apply...
The tech engineer works an 8 hour shift, operating 10-15 flights at once from cruise. Logs into the aircraft through a simulator and lands it. All data link. Who cares if one crashes in a non-populated area?
When his shift is over, he briefs the replacement and goes home to his wife and kids.
the A-380 already follows a TCAS RA without pilot input.
15-20 years, you see