Regarding the idea of a rise of “trillionaires”, gobal wealth is about $470T. Unless there is a gigantic expansion of the middle class from formerly poor people, it is impossible to have more than 470 trillionaires.
The idea of a 1 person billion dollar company or 5-10 employee in the Fortune 500 is laughable. Any business doing that much turnover is going to be hiring lots of vendors and contractors. I guess they could decide to outsource nearly all operations to keep headcount low, but the idea of one singular person generating a billion dollars of value from labour alone with no assistance from capital of an employer is likewise laughable.