Inventory management. In many cases you want this centralized so you can manage it. But the reason is really so you have a “record” of what is in storage. The blockchain keeps it decentralized (ie less risk of a user deleting it), at the same time anyone can query the inventory.
What kind of inventory receives benefit from this though? The users still have to trust whatever the group that maintains the inventory says is being added and the group that maintains the inventory can already expose what's in their inventory to whoever they want without making it a blockchain.
