I'm not sure why people continue to ask this question when the threat of massive global food web and ecosystem disruption caused by human-driven environmental damage is arguably far more imminent than job displacement. I say arguably because there are arguments that state the contrary, but they aren't realistic. Drastic job displacement due to automation will take at least 10 more years, while we're already seeing unprecedented droughts, groundwater depletion, pollinator extinction, and massive biodiversity eradication in the oceans. Scientists are literally saying that we are past the point of no return [0]. So why would people think that a massive unemployment wave will strike before an ecological catastrophe does? I'll tell you why: because rich people don't even know what they're doing. If they did, they'd know it would be in their best interests (granted, long-term best interests) to use their massive capital advantage to improve the longevity of the human race, i.e. their customers. And, as time has shown, the only way to wrangle in stupid rich people is by a revolution, and probably a violent one unfortunately. So ironically, as I say that there are more pressing issues at hand, my solution is to have a revolution. Disclaimer: I don't want this to happen any more than the next person, but it will regardless.

[0] http://www.independent.co.uk/news/science/donald-trump-clima...