That's because SF is unarguably a complete shithole (like literally, as in there is human feces on every street). There is a reason I refuse unequivocally to ever take a job that requires me to live in the Bay Area. Remote work isn't just good for your startup's office rent, it's good for worker health, diversity of experience and regional cultures, and helps your workers live in places that don't suck. Bringing everyone to SF is unnecessarily expensive and that city is awful.