A trusted ledger is valuable, but a ledger does not need to be distributed to be trusted. See above.
If, for some looney toons secret agent reason you need a transaction to be in a lot of places, you can ship out usb sticks, put copies of it on different data centers.
Or, just use a regular-ass bank. They already have distributed ledger systems for redundancy and responsiveness. What, you think that out of all of Chase's data centers there's only one server that has any transaction data on it?
Blockchain adds nothing that existing database and data transfer solutions don't have, but it always comes with cost and immutability (which is not the same as correctness- the >1 billion dollars stolen out of people's crypto wallets per year since 2018 is testament to that).