i don't think we will live long enough to see pilotless freighters or passenger liners.
the insurance of my 2 seater is higher than the one of my sportscar. the insurance of my 4 seater is way more than a SUV. statistically the chances that i will kill someone going down with my airplane is close to zero, while the chance i can take out some pedestrian is very high. does it make sense? not a tiny bit, but our agencies are terrified at the though of me flying a small plane, but yawn if i drive a 8 seats, 3 metric tons, 500hp SUV. i dont see any aviation authority ever certifying a liner for pilotless operation. even single pilot operation is out of the question, so far.