There is some self selection. Some of the Europeans who want to make more maybe moving to the us. Same with india being 5-10x lower salaries. Tangentially I offered to double an engineers salary in india to quit his job and work for me remotely. And he (an hn user) turned me down, saying he wasn’t ready… now, I don’t know if he had severe impostor syndrome or I am the impostor. it’s like when x-bezos calls someone to offer them y million dollars and they hang up on her.