This law will have no effect on rural places where parking is abundant. Yes, it prevents places like Copperopolis from passing laws that require more parking, b

This law will have no effect on rural places where parking is abundant. Yes, it prevents places like Copperopolis from passing laws that require more parking, but individual businesses will still build abundant parking because their customers want it and land is cheap. Dense places do not have the tools to correct the problem themselves due to the coordination problems mentioned in the parent comment. It's a pure game theory situation where nobody wants to act first. One could imagine a more targeted law that only applied to municipalities within X distance of a Y population density municipality, so you try to sharp-shoot the satellite suburbs that want the benefits of big-city density without the costs. But such targeted laws are also pretty hard to get right.