Between ILS airport pairs, the technology has long been here to fully automate. Now consider the immense complications of the Tesla autopilots being able to manoeuvre in a totally random environment. In contrast, the aircraft autopilot in a highly controlled environment is simplistic. Check out the Piper M600 Emergency auto land by Garmin. I’m not even sure it needs an ILS to guide it to touchdown. All this in a tin pot GA single. Imagine what Airbus and Boeing could do if they put their minds to it.
Everything an airline pilot does is either rule driven or can be made rule driven. And thus ripe for automation.
Pilot salaries are merely an annoyance to management. Their biggest constraint is rostering and complying with those pesky flight and duty limitations. And this is why automation is inevitable.
On the positive side bush flying in PNG and offshore Heli ops will be the last to be pilotless.