Computer backup and removable storage media were once considered a consumable, which could be ordered, interchangeably used and thrown away with little to no special consideration.
Today, however, as media has increased in storage capacity and reliability they can no longer be considered as a consumable, today, each item of media is very much an individual asset of the enterprise.
This can be demonstrated by the fact that, while many enterprises lease almost all other critical technologies such as mainframes, software, servers and laptops, they continue to own their backup media outside of cloud backup services.