Banks like to be able to reverse transactions. As do courts.
MacsHeadroom
Banks mostly deal in stablecoin which tend to be reversible, freezable, etc by court order since they're permissioned not permissionless.
nwah1OP
But in that case you just have a really inefficient database, and the entire point of the Rube Goldberg apparatus is gone. You don't need to solve the Byzantine Generals problem with a trustless system when you are trusting someone.