"And you are seriously suggesting that pilotless airliners will be taking over pilots jobs within 10 to 20 years?"
It will happen but maybe not as soon as 10 years.
But for sure there could be a reduction in crew numbers as a first step. Do you really need two dudes sitting up front counting waves? Maybe one could be minding the ship while the other one sleeps. Doesnt take more than a jiffy to get them back into the seat if an emergency develops, which rarely happens anyway.