Does the Data Show that Having More Rich People in New York City Benefits the Poor?

The New York Times told readers that Mayor Bloomberg is right, the data show that the poor have benefited by having more billionaires in the city. The basis for this assessment is that rich people pay a disproportionate share of the city's tax revenues. Therefore by having more rich people, the city has more tax revenue to help out poor people. 

The article even gives readers some basis for quantifying this gain. It tells readers that households with incomes of more than $10 million a ye...