Technology is getting to the point where it could actually make human labor obsolete. It has done that in the past and while this has created some consternation (see Luddites) it has always created new opportunities. Farm->mill->factory->computer tech-> web designer. But what happens when our AI robot overlords take over? We all like the phrase “labor saving device”, how about “job killing device”. We can see it happening in some low skill areas but it is also reaching into some high skill areas. I believe computers are better able to diagnose disease and read X-rays biopsies for eg. https://www.wired.com/2017/01/look-x-rays-moles-living-ai-coming-job/. Most people have only their labor (skilled or unskilled) to trade for everything else they need in a capitalist society. What happens when there is no demand for any of it? Suppose you create the first human replacement android and the software. It can be trained faster and cheaper to do anything humans now do including make more copies of itself. Should you and your patents allow you to acquire all the $$ in the world? Who do you sell the crap your robots produce to? This is an extreme example but it is clear the world is trending in this direction and it unclear how capitalism can accommodate this. Will we all be on a UBI and sit at home getting robot massages? Can this be called a capitalist society?