How are you so sure about all that? I don't see which upcoming development would make machine setup, maintenance and repairs go away. It's exactly the stuff that computers are not good at. It's things that require high dexterity, improvisation, interaction with business functions etc - things that computers and robots are not good at.

I have a personal corollary to the Dunning-Kruger effect: If you don't understand why something is difficult, you are completely clueless about it. And most things are difficult in some way.