us software salaries are insanely high compared to the rest of the world, because the cost of living in SV is insanely high.
I moved from Australia to the San Francisco Bay Area. My starting income was maybe 3x what I was getting paid in Australia, but the cost of living definitely wasn't 3x higher. Major Australian cities are considered HCOL (high cost of living) areas too. Some things like electronics and food were cheaper in the USA too, at least until inflation and tariffs made everything go up.