A better way to frame the spending is, how many additional people would be homeless if not for the efforts of San Francisco. There aren't just 6,700 people that refuse to be helped but tens of thousands on the cusp of a very bad situation.
I'd wager approximately 0. If you mean, how many additional people are homeless in San Francisco because of the efforts here, then the number surely isn't negligible but the wealthiest area in the country seems like a decent place to extend a little humanity. What's the alternative? Treat our homeless like shit so other people don't want to move here?
