He could use his assets/wealth to ensure everyone on earth has a functional, hygienic toilet. Would improve QOL for many who still live with open sewer systems.
H1B gives a lot of power over you by the employer, lose your job and you get kicked out of the country too, so there's a lot of pressure. So basically cheap labour and don't complain or else. And you have to live in a country that currently hates and demonises foreigners.
My manager (who is on an H1B in America) asked if I wanted to move there too. Lol :') No way. I'm not even visiting for a meeting anymore.
For me to ever consider travelling there at least 2 things must be fixed: No Trump and no mandatory social media collection and device seizures at the border. Not that I have something to hide but I just don't want to and won't cooperate.
I don't think this will actually happen though (the latter parts, of course Trump won't stay forever). Because the privacy invasion is a bipartisan thing.
Elon Musk was never trying to make the world a better place. He was always a businessman and he was using that to con the government into giving him money so he can make more money.
Now he's more worried about which toilets people use.