It's not unusual if it takes 20 years for a software developer in the Bay Area to produce output equal in value to a 2-bedroom condo. Skimping on office space is not some kind of miserly bean-counting. Software development is just not all that valuable compared to Tier 1 urban real estate.
Real estate in the Bay Area is high valued because of it being a downstream stop on the trickle down of VC money being blasted everywhere by idiots in to a captive market.