Few points:

-We don't need a superintelligence for ending hunger and the abject poverty that plague certain countries and segments of our societies. I suspect that it would cost less than what is being spent for fueling the AI boom.

-If I were poor, I would be even more wary of a superintelligence aligned to "human values" defined by a bunch of billionaires.

- AI won't likely create unlimited prosperity for everyone on a planet with finite resources

- all humans should, of course, have a say