My dad helped my grandfather build their family home from a kit in the 40s. Came with everything, right down to the nails.
When it arrive on the flatbed truck, they just tipped the bed and let it all slide off. The windows came on a separate truck.
His father could plainly see that some of the lumber was damaged during the unloading. The delivery driver handed him a form and told him to just list everything damaged, and they’d be back in a smaller truck with all the replacement parts.
Someone figured out it was cheaper to replace a few items than to take the time unloading the truck by hand.
Fascinating economics. As long as what was damaged wasn’t instantly needed, it probably wouldn’t even be frustrating.