It's clear that technological development creates a shift in jobs, i.e some jobs are lost, but new ones are created as a result. Whether the total #jobs increases or decreases is debatable. The issue that I see addressed less often is that the new jobs require by definition, a higher skill set. (You wouldn't displace 100 manual labor workers with a machine that requires 105 workers to maintain). So by definition, the…
Jobs are a byproduct of capital owners needing labor to sell things and services with a profit margin, so they can buy the good stuff. I’d argue that once the capital owners possess the technology that brings the cost of labor near zero, they will have no need for an economy at all, not to mention other people - unless it’s something more akin to a zoo.
Who is going to buy all of their crap then?