I think at this point banks will just wait for Apple to open up the NFC chip for 3rd party developers, coming up in iOS 18.1. Then from here they'll incorporate it into their native apps instead, rather than via Apple Pay. However, to use this, they "need to enter into a commercial agreement with Apple, request the NFC and SE entitlement, and pay the associated fees"

Developers can soon offer in‑app NFC transactions using the Secure Element