Once you've got rid of "cleaning" as an entire class of job, using new non-stick surfaces, roombas with steam cleaning attachments and so on, you don't just invent a new thing that needs manual cleaning, a good-enough universal cleaner will clean anything a person can.
Same with self-driving vehicles - once you solve that class of problems, nothing needs hand delivering again.
Same with automating any kind of fast food, manufacturing, warehouse loading and moving.
What are you going to invent in this future which needs to employ millions of people but doesn't involve then making or moving anything, typing or calculating, translating or pattern recognising?
Once you've got rid of "cleaning" as an entire class of job, using new non-stick surfaces, roombas with steam cleaning attachments and so on, you don't just invent a new thing that needs manual cleaning, a good-enough universal cleaner will clean anything a person can.
Same with self-driving vehicles - once you solve that class of problems, nothing needs hand delivering again.
Same with automating any kind of fast food, manufacturing, warehouse loading and moving.
What are you going to invent in this future which needs to employ millions of people but doesn't involve then making or moving anything, typing or calculating, translating or pattern recognising?