You can't fix shortage of agricultural or industrial water with desalination because you end up with a bag of potatoes for $50 Desalination only solves water

You can't fix shortage of agricultural or industrial water with desalination because you end up with a bag of potatoes for $50 Desalination only solves water shortages for human consumption. Water shortages mean famine A single hectare of potatoes need about 7,000 tonns / m3 of water. Desalination costs $1/m3, The cost of growing russet type potatoes for the fresh market was $2032 per acre. So potatoes will be 3 times more expensive For wheat, the difference is even worse