Generally speaking, you don't get financial poverty at all as a result of density. You get wealth. London is wealthier than the rest of the UK. NYC is wealthier

Generally speaking, you don't get financial poverty at all as a result of density. You get wealth. London is wealthier than the rest of the UK. NYC is wealthier than the rest of the US. Hong Kong is the wealthiest city in China. Mumbai is the wealthiest city in India, unless Delhi has surpassed it since I last checked. I haven't checked, but I'd bet 5:1 odds that Dhaka is significantly wealthier than the rest of Bangladesh. The California drought is primarily caused by inefficient use of water in agriculture. City usage of water is pretty much irrelevant.