We are objectively living in the best times of human history, ever. The global median person in the world is much better off than their predecessors.
Is wealth inequality growing? Yes! This makes people angry. Does that automatically extrapolate to billionaires will murder people (actively or inactively) simply because they can?
A resounding, emphatic, NO. It doesn't extrapolate to that.
What will almost certainly happen is the same as every other time. The technology will disrupt, cause short term pain for some, but ultimately become just another commodity and push up the standard of living for the median person. Billionaires will continue to be billionaires, normal people will adjust, we'll find out ways to put human productivity to use, life will go on.