The U.S.(western nations with high housing costs really) are drunk on the housing-as-investment model, and zoning increases and / or social housing positive policies will always take a back seat when speculative profits are involved.
The U.S.(western nations with high housing costs really) are drunk on the housing-as-investment model, and zoning increases and / or social housing positive policies will always take a back seat when speculative profits are involved.
The bigger issue to me is the constriction of supply. The suburban development pattern in many areas is simply unable to support the densities needed to manage regional issues well, causing traffic issues and forcing people to live very far from their places of work. I also have more unpopular opinions that there is too much "protected" land in areas like the bay area (specifically in the North Bay). Regardless of that, California needs to do better to fix the supply problem, because these housing policy failures are slowly beginning to affect more and more areas outside of just the bay area and SoCal, and the measures passed so far just don't cut it.
Also, prop 13 has essentially removed much of the "carrying costs" which penalize undeveloped land usage (prop 13 isn't the only thing here, IIRC there are also lots of state/federal tax deductions you can get from not using land, oddly enough). And the low property tax rates across the board really penalize young high earners since the low taxes are made up for with income/sales taxes.
When people have 500% of their net worth tied up in a single piece of property, that created very strong incentives to lobby for policies that prop up the value of that asset. You take away the tax incentives, and the mortgage subsidies. People probably still wind up with similar monthly payments. But now as a percentage of their wealth, housing becomes much less important. A 10% decline in home prices no longer leads to a global financial crisis. That makes it a lot easier to build a political coalition to increase housing supply.
Densifying I can get behind, turning the protected lands into a concrete wasteland of parking lots and hoa developments of boxes and mandated office parkish landscaping is not something to advocate. Is that really the best we can do?
The biggest problem, by far, is single family zoning though.
https://www.taxfairnessproject.org/ for the unfamiliar
Bay Area in particular you have a crazy imbalance that basically absorbed the high salaries of those working there. For many, the issue could be fairly easily solved with some additional height and/or townhome density. It’s happening slowly. The pandemic has created other dynamics though, so who knows.
EDIT: just a closing thought on the policy side, you are basically making affordability problem worse by reducing incentives. Those already in the real estate market/ownership will be fine, but price of entry will be a lot higher.