I love market based economies, but not the idea that markets solve all problems. You said something about “their water”, and that’s the problem. Going back to the history of CA water rights, there is no clear concept to determine who owns water. If I buy the house on the river upstream from your house on the river, who owns the river water? I went to college in CA and had to take a bunch of CA history classes. I highly recommend reading up on CA water rights and it’s history. It’s a fascinating and enlightening topic.