> Apple absolutely has zero incentive to support RCS as a fallback
Wouldn't their users gain better security and privacy with RCS (because of e2e support)? Or are you saying that an Apple user's security and privacy is not an incentive for Apple?
Not necessarily. Strictly speaking, the E2E part is being added via Google's network and isn't part of the spec. It's using the Signal protocol, which is just as open for Apple to use as it is for anyone else, but it doesn't inherently come with every RCS implementation.
