Today, no passenger wants the computer to control the plane. They are right.

Today planes can take off and land using only software and radio signals, even when the pilot can't, like no visibility when cloudy.

The problem is that computer understanding of the surroundings is NULL. Today there is no software that could understand(well) that there are birds(or small planes) on the way that are going to be eaten by your engines, and damage it.

The only technologies that work are active, like LIDAR, this is going to change, but first on vehicles with less degrees of freedom. Trains(1FD) before ships(2FD) before cars before planes.