We are much better off, of course, but that isn't enough to get the thing done. We also need to figure out how the "much better off" gets distributed, in a way

We are much better off, of course, but that isn't enough to get the thing done. We also need to figure out how the "much better off" gets distributed, in a way that convinces everyone to actually do the thing. If, for instance, Google is held liable for accidents while reducing the overall rate, self-driving cars aren't going to be a thing (unless you fix that particular problem). Or if the victims of self-driving car accidents have difficulty getting compensated.