If SB827 had passed, I am sure some SF neighborhoods and cities in the Bay, would have either defund existing or stop any new public transit projects, to avoid up zoning.
I think the City should just create a plan like Haussmann did in Paris. The City should start by preempting all the lots that are underused (parking lots, gas stations, car wash, single story commercial buildings, etc.) and build to the limit for the area. We could even keep the single story business at ground level (car wash, some parking, etc.). That should bring lots of units to the market.
Cities in the Bay should build more too. It is a bit crazy to have Apple or Google, creating those giant campuses for 10's of thousands employees, in cities that do not build anything close to accommodate the families of those employees. Cupertino and Mountain View welcome taxes from Apple or Google, but do not do much to house those employees and their families. Maybe every city should provide at least the same number of units as they have employees.