Is it a cost structure issue? Ie, replacing the captain on a ship that holds 15,000 shipping containers, does that lower the cost of each container by a couple

Is it a cost structure issue? Ie, replacing the captain on a ship that holds 15,000 shipping containers, does that lower the cost of each container by a couple of dollars? Similarly, with airline pilots, how much of my ticket cost is pilot labor? However, if you look at Uber, if you removed driver labor cost from my fare, does each ride now become 60-80% cheaper?