There are examples suggesting that

There are examples suggesting that public officials are more effective as revenue collectors than their private alternatives. For instance, over a two-year period Temeke municipal staff in Dares Salaam added about 80,000 properties to the municipality’s flat tax property register at the cost of less than one US dollar per property. During the same period private consultants who were engaged by the municipality added only 5,000 properties at a cost of USD 17 per property.