It costs a lot of money to train one person to learn stuff.

We are already now in the time were training one LLM seems to be more cost effective to train for everything than training a million people the same thing over and over (after all, people loose knowledge when they get replaced).

LLM don't even need to become AGI to continue this trend. They just need to be good enough 'executors' of these tasks we expected people to do.

Which also means that every new job, which needs any form of training, will not be created because we will train ONE llm (or three, doesn't matter) to do it right and again you optimized the new people away.