Of course it's a good thing. Tax rate and tax revenue are 2 totally different things. You can have rising tax revenue without increasing the tax rate, but only by adding more people that make more efficient use of existing infrastructure. This increases the tax revenue per acre, and provides more money for schools, social services, etc. Without the addition of more people, we would need to increase tax rates to increase revenue, but as it currently stands, the densification can take care of that to a large extent. It's simple economies of scale.