In theory sure, but not so much in practice. The east coast of the US dumps a lot of fresh water into the ocean, but trying to transport it to the Midwest is pardon the pun a herculean task.

We transfer millions of dollars of fresh Florida water all over the world every day at a profit margin of ~1600x. It comes in little plastic bottles.

Now make it competitive with desalination at around 1/2 a cent a gallon and realize even that is far to expensive for agricultural use.

That’s the difference between theory and practice.

And, just as oil, it costs money, adding to the price.

And, with enough electricity, taken right from the ocean.