I'm SDE myself so I don't have much data on that. I've heard people in finance get insane salaries. I would assume that folks working in SpaceX are doing better than their European colleagues from ArianeGroup (who may soon do even worse [0]).
How patronizing. I was born in a country where SDEs and "people who keep you alive" were paid more or less the same and don't want to go back, thank you very much.