They needed to make a lot of real-time responses when coming in to land, as they had a very narrow window of viable speeds and limited control.
A partial mitigation of these issues could be high bandwidth / low latency networks just in take-off / landing corridors?
They may still need help at landing, or by then it could be relatively normal.
But if you can’t provide that level of help everywhere (including over oceans) the design of the system is choosing to lose planes in a trade off for needing fewer human pilots.