I agree with you, but we don’t need to focus this on only San Francisco. Other cities should be walkable and productive. Tech companies should relocate jobs from “status” cities to non-status cities across the country.

Some cities have untapped potential for more suburban sprawl. It's unlikely that any such place capable of attracting tech investment has enough commutable land to make a difference before succumbing to the same problems.

Every area that's a candidate for urban density and public or active transportation has people living in it already. Those people are not any different from San Franciscans in terms of their concerns about gentrification, traffic, parking, shadows, or change.