I'm not sure I agree. I think that density can lead to more desirable urban neighborhoods, which in turn attract higher income workers. Also, network effects ca

I'm not sure I agree. I think that density can lead to more desirable urban neighborhoods, which in turn attract higher income workers. Also, network effects can be dramatic. A higher concentration of knowledge workers can end up generating a higher level of economic activity, and knowledge workers can increase their economic output by living in close proximity to each other. A larger concentration of high income workers can absolutely fuel higher housing prices. This is why I'm not sure that higher density will lower housing prices in SF in the long run.