Earlier quoted context omitted.
Oh, yes, some stuff scales badly for sure, but for example farming scales hugely! Medieval societies required 80-90% farmers in Western Europe, it's now somewhere around 1-2%.
Yes, but we seem to have plateaued there. Also, that 1% to 2% is for grains and other stuff that can be easily harvested with large machines, which is awesome, but the delicate fruits and vegetables and nuts from more tropical places seem to be far above 1% to 2%.
Completely autonomous farming vehicles have only been a thing for a few years and not been universally adopted yet (partly due to the high cost). I suspect there are still some ways to go here.