The Democrats run the cities where this is happening. What are they going to do about it? Quoting the article:

'I recently finished reading “San Fransicko,” by Michael Shellenberger. I recommend it. The subtitle is provocative: “Why Progressives Ruin Cities.” But, as Shellenberger explains, he does not mean to imply that progressives always ruin the cities they govern. He’s just interested in the specific phenomenon of when progressives do ruin cities, and explaining why that happens.

And progressives—I count myself as one of them—do ruin cities. Or, at least, they put in place policies that cause profound harm to the people living in them.'