Maybe you don't need it anyway?
In their rush to talk self-importantly about the benefits of AI and the dependence that will create on US companies, the banks seem to be missing the important question of what useful, enduring benefits they really think they're going to get. There's only a rump of the branch networks left, those jobs have gone. You've automated and offshored all the transactional stuff so any benefits of further automation will be a very shallow pool of cost. And core banking functions such as risky lending, de-banking people you don't like, mis-selling, rate rigging, market fixing, and the like, they all require a few humans to plan and execute.