Blockchain will be adopted by banks not because they "believe in it". Under pressure, selectively, and with an eye towards control rather than transformation, they will accept it the same way competition tech is absorbed by legacy empires. Adoption has nothing to do with this. Their approach is integration without compromising their central control systems
Blockchain doesn’t just offer efficiency but it also rewrites the trust layer. Traditional banking has spent centuries making itself the middleman of trust. Should blockchain replace the need for it, banks have two choices: either become fossilised customer-service brands clinging to regulatory leverage or evolve into protocol-level validators
You brought up reducing operational expenses, which is certainly surface-level appealing. But can an institution built to gatekeep truly embrace a system designed to disintermediate? Technically, banks could implement private ledgers (they already do: JPMorgan’s Onyx, for example). That is not, however, public, decentralized sense of blockchain. It’s blockchain in name only, a way to optimize settlement and clearing while preserving hierarchy. They would make advantage of it. But don’t expect them to surrender power just because the tech exists