It's not selective reading. It's a discussion.
So sayeth G-Man. And yet, you keep missing exactly what I'm saying.
You say he shouldn't charge for work that benefits humanity. How would that work in the real world? Where would he (or anyone else) get the funds to pay the employees for those products if he didn't charge?
What he sells in entertainment technology.

Who would decide what work "benefits humanity" and is, therefore, to be free?
Create tech that creates devices. Make those devices for entertainment purposes. Take revenue from said sales, and pay to have new tech developed for beneficial human science and medicine.
That is exactly what I'm saying.