>It's going to be a spectacular, automated race to the bottom.
Excellent! More efficient shipping benefits a lot of people. The problem isn't the increase in efficiency — are faster CPUs a race to the bottom because worse chip makers go out of business? — it's poor policy that fails to adequately compensate those who lose from this. We should focus on electing officials and supporting policy to turn these Kaldor-Hicks improvements into Pareto ones.
(I know you're not taking a stance against automation, I just think it's important to stress that the correct response is to make everyone better off by using some of the gains to compensate the losers)