Linkbait title.

This author still thinks about economics in terms from over a 100 years ago.

Many technological advancement allow us to produce more efficiently, i.e. produce the same amount of output with less input cost, including labor. When we get to the point when we can produce all the output we need with virtually no input cost, and by the hands of an increasingly small % of the population, I'm not sure modern economic theory has anything to say about such a situation, because it is built on many implicit assumptions about the scarcity of resources which may not be true forever.