Most of the bay area employees are divided into 3 categories from anecdotal experience: young rockstars that are willing to live in relative squalor for a chance to prove themselves, vested and moneyed elites (CEO's, presidents, VC funded overlords) who are so out of touch with the average employee its best they not show up to the office that frequently, and H1B visa recipients that endure the soul-crushing San Jose…
In which of the above 3 categories would you put the Google/Facebook/Apple employees making 200-300k+ per year? I can't speak towards family living, but as a single person willing to live with roommates, you can find pretty nice places in the heart of Silicon Valley for ~$1000/month. Now add in compensation-packages well over 6 figures, brand-name companies for your resume, networking locally with other great enginee…
That would fall squarely in the 'living in relative squalor' category. making 200-300K and living with roomates in a small place? Pretty atypical for most of the world, and completely discounts most people over ~25 years old.