The thing people forget when comparing to past technological advances is that for the largest part of history unemployment was 90%+ at the best of times, ever since a few hundred years into the Roman Empire, if you count subsistence farming as unemployment (and since people didn't do that unless they had to, you should).
I think this is what's really happening. The economy is reverting to it's natural state. Of course for most of us that's not a good description of what's happening. Better would be to say "conditions are returning to what they were in the middle ages".