Think it through …
A manufacturer (let’s call them ‘Airbus’ for example) has to convince themselves of the business case.
Then they have to spend zillions developing and certifying it to the satisfaction of every country it may fly to/over.
Then they have to find launch customers.
These launch customers have to promote it to their potential passengers who will almost certainly have the choice of flying on a humanly-piloted alternative. What will their selling point be?
What happens after the first pilotless airliner crash (there assuredly will be one)?
Just because it’s technically feasible doesn’t mean it will happen.