Why would requiring interoperability of messages or video calls prevent an app from implementing a "send money" feature?

Also, if you want to make a "send money" feature, why would it being interoperable preclude you from doing it? Bank transfers are already interoperable, why can't a send money feature be?

> e2ee with group chats

See: https://interoperability.news/2022/03/end-to-end-encrypted-g...