Perhaps an average developer couldn't as the average is around $100k, but a realistically high earning one could. Consider someone who is a staff/senior staff/principal engineer at one of the usual places or someone who went through a nice exit. Forgive me if I read your comment too literally.
I think that's generally the conclusion that I come to: I'm very happy being realistically rich in America, but I'd much rather be in Europe if my financial situation were average for a software developer.