Distributed ledgers were not a Bitcoin invention. Proof of Work was - largely a waste of electricity. There's no reason why SWIFT or any other institution can't have far more efficient real-time payments. It's already the case in most countries (UK & EU).

Distributed technologies have largely been useful to actors that wish to remain anonymous (Napster, Tor). Money transmission probably shouldn't be (if we want to avoid scams as a society).

Anonymous cash is good, but BTC is not really digital cash either - it doesn't work in a warzone without internet for example. Any real alternative to cash would have to work offline. And any real alternative to bank transfers would have to be regulated.