Isn't a big part of the current problem that transport/delivery/shipping vessels and/or their portable containers have been forced to become part of the storage

Isn't a big part of the current problem that transport/delivery/shipping vessels and/or their portable containers have been forced to become part of the storage capacity? Does it really require much more than that to break the whole system down? You could have what was once a highly parallel system with tons of transport bandwidth brought to its knees and effectively serialized if not completely deadlocked by just overflowing your storage capacity enough to fill all the transport stuck in queues and other forms of holding patterns. Thought exercise: You have two warehouses surrounded with tons of loading/unloading docks, plenty of bandwidth capacity, but they're both full inside. You have 20 trucks available, and they too are all full of goods, 10 parked at the docks of one warehouse, the other 10 parked at the other warehouse. But nothing is happening, because all the trucks are full and waiting to unload, and all the warehouses are full. So you introduce a 21st truck that's empty, and it shows up at one warehouse, loads up, and moves the stuff to the other where it needs to go. What happens? Did you fix the problem? Barely; you've opened up 1 truck worth of transport capacity. Despite having all this potential parallelism and idling trucks at concurrent docks, you will still be stuck with just a single truck moving around making glacial progress at any given moment. At least until enough goods exit this closed system where only the warehouses are storing and the trucks are all transporting again, which requires preserving sufficient headroom at the warehouses to ensure any docked, fully loaded truck can unload immediately. It's a vastly simplified example, but I wouldn't be surprised if something along those lines has occurred where the transport has become storage because there's been too much stuff pumped into the system for the available holding capacity. It's like trying to rearrange your overfull apartment when there's zero floor space available, you can't move the bed because it's wedged between the couch and the table. You need to take stuff out of the space so you can actually move things around.