Probably the same as they dealt with it in every other decade of the past century that people worried about workforces disappearing overnight due to technological development, women entering new areas of the workforce, immigration and outsourcing: by paying unemployment benefit to people whose jobs were very gradually replaced and ignoring the doomsayers who insisted - despite all the evidence to the contrary - that in aggregate humanity wasn't ingenious enough to find new things that other people would pay them to do.