I think you can still get chain of custody, though. I have a laptop for anything touching prod and while the chain of custody needs to be kept for physical security, the value of insurance for my company is negligible. It's probably cheaper and easier for them to just eat the cost if something happens during transit than to try and deal with an insurance claim.

Another case is for shipping products to customers. With how insurance works, the insurance would cost you more than just sending the item again. However, proof of delivery is really nice for if a customer claims something was never delivered.