If we abolished Prop 13 statewide, did some minor up-zoning throughout the Bay Area (and had more mixed use zones), made new housing easier to construct (less drawn out process for people to block development, etc.), reduced parking requirements, worked on improving public transit, and taxed unlived-in buildings [or better, switched toward land-value taxes], did more planning at a regional rather than municipal level, we could take a lot of incremental bites out of the housing quagmire.
Unfortunately most of those are politically infeasible.
From a strictly economic perspective they are helping increase demand when it was low and increase supply later on. They got rewarded for that.