I see this turning into even more of an issue. Water is still free, but they are cutting back on it. So the airline runs out of water, since no one buys a coke. People then get dehydrated, airlines are at fault or at least blamed since they do not have a water fountain on board. Hopefully Delta/ NWA will not go this way, but I am sure they will wait and see what everyone else does. AA tried it a while ago and gave up.