I get that this doesnt matter for a lot of people, but i specifically chose my bank because it had close ties with Plaid (API aggregator) - the closest we currently have to open banking. To me, it just seems so fundamentally simple to be able to offer a way to export your own transaction information to whoever you agree to share it with. Boggles my mind that we dont have this already.
In Canada, the thing that makes people hesitate when giving financial data to an app is where liability sits when sharing your account details. Right now, because i'm sharing my credentials with Plaid some banks would refuse to reimburse you if you were subsequently hacked - regardless of the leak source. When open banking legislation comes into effect, this liability will be shifted to the data brokers (plaid), and potentially also the thrid party applications that do things with your financial data.