As someone not familiar with Californian/SF local legal matters. What do they need the tax $ for if there aren't many residence?
Prop 13 limits the % you can raise property tax each year, unless they sell the property (at which point the property tax resets to the sale value). That leads to a lot of people not moving and holding onto their old, low tax property.
But it's not sustainable, and imo, downright evil.
There is no amount of money that is enough.
Not spending fast enough? Maybe a high speed train would solve things!
Grew up there. Been traveling country since. Shocking how well states do with a lot less money.