I've grown a little bit more skeptical of what can realistically be achieved by the passive nature of YIMBY-ism. In Portland, they passed some radical new zoning laws a few years ago that allowed anyone, anywhere the ability to zone ADUs on their property. And the cost to get permits is almost nothing. I have lots of friends and family in the area with property. But not a single one has added an ADU. It seems like it…
I've been watching something similar happen in LA with Measure HLA, a "safe streets" bill that was supposed to require the city to include safety improvements for pedestrians and cyclists during regular road maintenance. The bill passed with broad support but none of the people in charge of the agencies seem to want to do any of that stuff, so they either drag their feet or simply don't comply, leading to lawsuits and delays. (Just today, Metro voted unanimously to not include a now-legally mandated bike lane along a major new busway, claiming it's not their problem. Which might be true — and that's a separate issue — but playing hot potato with safety & mobility improvements feels like a leadership problem, not a legal problem.)
I like designing good incentives but in this case just passing laws is not working. You also need the actors to want the change. (I personally would be focusing on installing new leadership.)