
Naturally, housing prices in these historic neighborhoods cannot support a diverse population as Jacobs described, and instead prices soar so high that these historic districts become entirely unattainable to the common Joe (looking at you San Francisco)

This has changed in many regards for many cities today. Jacobs wrote "Great American Cities" when urban living wasn't popular or fashionable.

I think a major issue with Jacobs is her position on keeping low-rise historical buildings preserved until the very end! I think what we're seeing now (and what appears out-of-date with her book) is that the problem with this is that it conflicts entirely with her idea that a healthy neighborhood needs to have the surveillance and activity of a multitude of people of different classes.
