What is going to compel the shippers and carriers to invest in the needed infrastructure? The owners of these companies can theoretically not change anything and their business will still be at full capacity because of the backlog of containers. The backlog of containers doesn’t hurt them. It hurts anyone paying shipping costs — that is, manufacturers selling products and consumers buying products. But it doesn’t hurt the owners of the transportation business — in fact the laws of supply and demand mean that they are actually going to make more money through higher rates, without changing a thing. They don’t have to improve or add infrastructure (because it’s costly), and they don’t have to pay their workers more (warehouse workers, crane operators, truckers).