One size fits all, except when it doesn’t.
Dimensional weight shipping rates have grown in popularity as e-commerce has taken off with customers. FedEx started charging the majority of its customers based on the size of the package in 2015. According to 2013 data from ShipMatrix, parcels delivered to residential addresses and weighing under 5 pounds had grown from 58% of ground package volume to 75%, contributing to the change. That mix has only grown since then thanks to e-commerce.
It is...
https://www.freightwaves.com/news/gxo-deploys-3d-tech-automation-to-create-custom-sized-packaging