I think it unlikely that there will be Single pilot crews any time soon. Systems break all the time and the crew is there to manage things when they do and make the hard decisions. Even IF we see a single pilot airliner in 10 years (which would require every country to be on board with the idea) - there will still be 2-crew airplanes flying around for 20-30 years after that. Hell there are still some 3-crew airplanes flying today.