Wait, what? Utilities all over the world have rate systems that offer higher or lower prices based on who's paying. "Water is fungible" doesn't mean that you can't charge Amazon more for it than you do the little old lady down the street.

I'm not saying that the current rate systems in Mexico, or California, or XYZ place are perfect -- far from it! But there's no reason they couldn't be changed to fit society's goals.

Those are the result of heavy regulation, not deregulation.

Edit: and they’re still drastically biased. Eg farmers getting preferential rates for wasteful crops like almonds.

Your last sentence disproves the first.