I guess freedom of movement isn’t a big thing, financially or legally, in Star Wars. Like the real world, really.certainly for anybody with spaceships capable of reasonable travel times to other stars.
Then it's a quick trip to a gas giant's rings to nip off with a block of ice.
Which kinda brings up the whole stupidity of moisture farmers on Tatooine. Why live on a desert planet farming water? Tree farmers don't go to the plains and wait for trees to happen. A smart moisture farmer sets up where the water is. Like a watery planet.