Half a trillion dollars is spent every year in advertising to those poor people to buy things. Trillions of dollars were spent on chasing jihadis around the desert for 16 years. There is enough money floating around currently spent on nonsense to achieve both yours and Musk's goals.

And if you do not see the potential for positive externalities created here on Earth by arguably the most ambitious project mankind has ever endeavored to undertake, your aperture on the world is quite narrow.