The problem with that is if California cuts water supply to Almond farmers now, it will destroy California's Almond making capacity for years to come. If water restrictions come to California for Almond growers, that will incentivise Almond growers from around the world to increase production (transplanting trees isn't as hard as you'd think). The Almond acquisition infrastructure that will grow around this new production won't simply switch back to California if/when they lift water restrictions. Who's to say the restrictions won't just return at a later date? So California will be telling the world "we're not a reliable source for Almonds" now and forever.
When you drive a customer away, they're never coming back.