New York Times: There is nothing more American than making money off the needs of others. Im not talking about war profiteering or selling people on prospects that arent real. You dont have to do those nasty things. Just provide something others really need that you have in abundance. Thats called a win-win. Wall Street even has a technical word for it: arbitrage. One item is currently in very short supply in the western part of our country: water. With a California drought leading to tough water restrictions,...