What can people do instead of technology jobs, to make real productive work in the labour market?
I disagree. The successful experiments are negative to society just a few years after some startup wins in a niche. The world would be better off without Google, Facebook, Airbnb or Uber now that they already "changed" the market. Every tech dominance becomes society-negative over time.
I personally wouldn't want any job where I didn't feel like I was personally helping push out the Pareto frontier of civilization, though. Everything else feels somehow short-sighted to me.