Silicon Valley is fairly unique, and not remotely comparable to the rest of the world. In most of Europe, a senior dev makes less than that. Freelancers are a bit more likely to make more.
Sure, but that's cost of living. $100k/yr is needed in Silicon Valley just to cover your portion of rent for the above-garage apartment you share with 8 other people.
Jeez. I'm a senior front end developer in Western Australia, on 70k. Build Fintech systems... It would be interesting to compare the costs of living etc to see how salaries over there compares to here.