You're not going to get those most places. I'm not sure it's the norm in the Bay Area either though.
It is absolutely the norm in the Bay Area for salaries even adjusted for cost of living to be far better than elsewhere. Plus all the additional attractive features like a relatively more tolerant population, much more diversity, better public venues like parks, and recreation like museums and such.
In my experience, people mostly look to preserve their financial position rather than take a jump up. Just because rent's cheaper somewhere else doesn't mean I want to take a proportionate pay cut. I've watched people turn jobs down flat when offered 50% of their pay in NYC because rent is half of NYC's.
Salary history matters a lot of negotiating power in the future. Salary matters for building up a financial cushion in case this job elsewhere doesn't work out and now I'm somewhere that has a lot fewer options on offer.
I'm also in a position at the moment where I have relatively low overhead (no kids, good health) and realize that might not be the case for everyone, though I'd bet it's the case for many people who don't bother to take advantage of it.