Now multiply that by thousands of containers per trip. Yes, it's part of the problem. There's a bit more than "Oh it costs $4000 to put a container on a ship". You also need to factor in what the container is carrying and what the revenue is for shipping that container. Also this is not some ground breaking change in how containers are tracked. Increasing the cost isn't going to show dramatic reduction in cost.

>I don't think that that was the main problem.

Good to know because nobody stated that.