The long time residents of SF don't believe in _change_, and that isn't going to change.
It is just happenstance that the initial San Jose tech explosion happened near SF. ...but maybe other parts of the country are better suited to it going forward...
Those longtime existing homeowners are trying to maintain the current landscape and don’t want new construction obstructing their million dollar views.
Yes many are NIMBYs, but so would most people if they grew up in a place that saw an influx of new people wanting to change the landscape with ugly high-rise all glass condos that blind you when the sun sets or change the feel of what they’re familiar with.
In a way, I don’t blame them. The majority of newer construction in the past 20-30 years in SF particularly is horrid.