There’s still the cost of pumping and distribution. But still, if the cost is bearable, imagine the interior of Australia becoming a breadbasket rather than a desert. Or the Sahara blooming.
An Israeli scientist has calculated that the world could support a population of between 45-50 billion people, if resources were utilized correctly.
Please don’t think so far into the future!
By then all humans will have fried due to Globull Warming, and the surviving cockroaches won’t be able to read the instructions written by bad Chinese interpreters!
If we could free ourselves from environmental propaganda we would be investing heavily into smaller nuclear power generation using thorium (which can dispose of current nuclear wastes). Cheap energy benefits everyone.