According to the article, the City of San Francisco spends $242 million annually to do just that, and the City of New York spends over $1 billion to do just tha

According to the article, the City of San Francisco spends $242 million annually to do just that, and the City of New York spends over $1 billion to do just that. It's not that nobody wants to. Apparently the ways they are trying to take care of them now are not particularly effective.