It is hard to speculate about this sort of stuff. Container ships going through canals and other tight spaces are pretty vulnerable; even if you “take over,” it could be hard to stabilize things to the point where nobody can sneak around shooting rockets and whatnot. See the Red Sea situation, which is different in many ways, but goes to show that small groups with rockets can still be a big pain.

All that is just to say, it is nice to have local production of stuff like food and energy that is needed to keep things going.