Honestly, all SF has to do is stop obstructing projects that are a mere 20% subsidized units. It's become common political practice to pretend that a parking lot housing zero people is preferable to a lot housing a bunch of people, of which up to 20% are impoverished and formerly unsheltered vulnerable community members. Couple it with a fantasy that 100% subsidized is within reach in all cases and you have a recipe for a parking lot staying that way forever and the unsheltered staying that way too.

Getting people in housing is often the first step to being able to help them with everything else making their lives difficult. It's remarkably hard to deliver psychiatric care to people who cannot be reliably contacted.