Except it’s a ledger, not a db. Devs can’t alter the ledger, only provide transactions. You get scammed by a player, someone hacks your account and steals your stuff. The devs might be able to give you replacement stuff, but they can’t take it from the hackers or who you traded to.

This gets worse with crypto where each item is unique. The devs can’t then just make more money/items to replace your loss.

There’s a good reason why databases are used