Your entire premise is founded on outright greed. Lets assume that machines can make and repair machines and mankind loses all its jobs, what then? Does the one person that holds ownership manage the whole and watch the useless eaters starve because they aren't as cunning? I mean if they weren't smart enough to cut your throat before you cut theirs why let them live? That's what's being preached here.

Life has set requirements to sustain it and when somebody does not receive a living wage, they are subsidizing their employer by giving more than they are receiving (literally dying slowly). But hey, good for the nameless faceless corporation right, because after all our values are denominated in Federal Reserve notes these days. To the victor goes the prize...

Let alone the question of what less intelligent, mentally retarded, elderly, or disabled people etc... are supposed to do in this panacea.

At least Jack London learned the lesson. 

Okay you found justice, now go find mercy too.