US government often doesn't recognize your family member as a dependent, so you get taxed a lot and you still get to support your family members that completely depend on you. So your FAANG $200k salary in CA will yield $120k in cashflow(no 401K or medical), and if you have two parents to support - you're screwed by the government and your real income is shared between 3 people.

I mean.... I literally cannot get my mother to be my dependent, even though I fully financially support her.