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Hi Andrew - great point. What you describe is very much true for public and permissionless networks, but there are many different ways to implement blockchain technology for open banking. One of these is to use permissioned network structures that do not expose data to third parties outside of the entities approved to handle said private information. Generally, what could be called "enterprise blockchain" utilization happens in these types of environments, that can then potentially be bridged to more permissionless networks in a manner which does not degrade data security. There is also a lot of progress happening in the area of privacy-specific solutions, like zero-knowledge proofs, that could be applied to provide more privacy even in permissionless environments. Thank you for your comment!