Feels like a problem that will be solved as soon as incentives will be here, and cost of fresh water from other sources depleted or protected. The costs mention

Feels like a problem that will be solved as soon as incentives will be here, and cost of fresh water from other sources depleted or protected. The costs mentioned in this 15 years old article aren't that high in a world where we have to be careful with water. I wonder what is the reality now.