Every time I visit pretty much any other city in the world I'm reminded of how refreshing it is to be somewhere that people who aren't on insane software engineer salaries can afford to live.
The selfish perspective is this: I can afford it here. My quality of life is greatly reduced by the fact that hardly anyone else can.
I find it incredibly frustrating.
Of course the expectation that housing should be an investment has been a social disaster, but that's not something SF can solve.
Find me real estate developers who really want to build mixed income or affordable housing. They don’t exist in my experience in the industry. The lenders want huge upsides, the developers want ever bigger upsides. Governments consist of by unsavvy or corrupt people and developers run circles around them, promising to build affordable units and then reneging on those promisies.
Are you certain about this last point? SF has rent stabilization, so someone who has been in the same unit for many years might well be paying rents substantially below market.
Naturally, this makes rents that much higher for those who arrived recently or decided to move, and often leaves those with rent control ‘trapped’ in a situation where they can only afford to stay put.
It’s a classic case of ameliorating a first-order effect while making second-order effects worse.
Most of the mayors, including the current one, typically want to build, but the Supes have other "priorities" and loathe that developers might make a profit. Then, of course, we have neighbors who don't want to allow progress and want to nix most housing developments.