We can just build more housing. Landlords and home owners in California are addicted to their continuously rising property values. To the point where there was a thing called a "California Refi" where people would just refinance their house once a year to take more cash out because the property value would have gone up another 50k.

Many Californians acknowledge that there needs to be more housing built, but many of them are also NIMBYs who don't want multi-family housing built in their areas, because it'd lower their personal property value if there was more housing available.