Thanks for your response @neavvy. A human "job" serves only one purpose; that is to fulfill human needs (which are well summed up by Maslows hierarchy of needs).
If AI is "producing" products and services which other humans are "consuming" and there are still a group of humans that are not having their "needs" being met still, then (at least in a free market), humans will always be left to serve each other what and where the AI's fail to.
We actually suffer from this problem already, but instead of AI's rubbing out the competition, we have the world banking elite and their "system" doing that. If you choose not to "consume" what the globalist banksters, hucksters and social engineers are selling, you will be marginalized and "replaced." Much worse than AI could ever be since these folks are intentionally "evil" whereas the AI are simply programmed.