Yeah, definitely. And thinking about it more I'm sure there are some air traffic controllers that manage 10+ airplanes fine (although they aren't as involved as the pilots, so a remote operator would have a higher workload).

I bet a fleet of commercial autonomous aircraft operation out of private facilities would also have a lot more common procedures (all their airspeeds, climb/descent rates, etc would all be the same), so it might even be easier.

Also maybe they could pool resources? Like pilots in an area where everything is fine leave their planes on full auto and go take over another plane from another pilot?

Edit: Or maybe, expect the planes to be fully auto, then have a bank of pilots available to take over any plane that is having troubles.