When you go further back, when you read Tamim Ansary or Jared Diamond or the Durants, you get the perspective that technology is always deployed only when it is beneficial to the deployer.
Interesting! Trowing Rocks at the Google Bus touches on this but not explicitly. It argues that technology that's good for customers doesn't work in companies dictated by quarterly earnings and shareholders - in other words, not beneficial to them. Put bluntly, the book's two thirds 'here's why growth-based capitalism is bad' and one third 'blockchain and B-corps can save us'. I thought it was a nice read even though he misses the mark sometimes. At the same time I wouldn't be surprised if you can name half a dozen authors who cover the same ground as Rushkoff.
I hadn't considered energy efficiency in this way. Something like the steady decline of solar energy costs definitely supports that idea.