Pallets, cargo and boxes are more than often not loaded to their maximum capacity due to the complexity of the mathematical equations that need to be solved.

Or in other words, there's more air left inside than necessary because the contents have not been organized efficiëntly.

With the prices of the essential components of transportation going up, wether it's fuel, container space or others, it becomes harder to keep providing all services at the same prices without affecting the profit margins.