It includes people from all over the world. US skilled salaries are usually 2x+ (not just for tech, but also things like healthcare) salaries in Europe. Remember they have social safety nets and lower costs for things like education and healthcare, we do not.
Also this list has a very small sample size, and very few people from big tech, otherwise the pay would skew significantly higher.
Also this list has a very small sample size, and very few people from big tech, otherwise the pay would skew significantly higher.