At a recent postmortem for the so-called Twitter tax break, the divisive San Francisco policy that drew tech companies to a beleaguered stretch of downtown, the tone at City Hall was chilly. Tech offices---the likes of Twitter, Zendesk, and Uber---had indeed arrived as promised, but residents of the city’s Mid-Market neighborhood told officials that little uplift came with the logos. “I’ve seen the number of people who are sleeping on the street increase.

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