Of course Apple doesn’t want others to access the iMessage protocol. It’s part of their walled garden. They can claim it’s a secure protocol because they have full control over it. An application like Beeper gaining access undermines this.

Beeper doesn’t access some sort of global repository of messages, but we’ve no idea what Beeper does with the conversations that are had via their clients. With iMessages you trust Apple, feel about that how you will, with Beeper you trust whoever is in charge of that.

Beeper is never going to last anyway. If they manage to regain access to iMessages, Apple will just update the protocol to reject them again. With Apple implementing RCS there’s not really any point in applying legal pressure on Apple to open up their platform either.

All of this has already played out before, some ~20 years ago. Microsoft wanted MSN Messenger to be compatible with AOL’s Instant Messenger, so they reverse-engineered the protocol, only for AOL to update it, breaking the compatibility. It went back and forth until Microsoft revealed that AOL was using a buffer overrun exploit in their client to do remote code injection in order to authenticate the client.

Apple will never allow Beeper to exist; there’s no point investing any time or money into it as whenever they manage to sneak back in, Apple will boot them back out. Perhaps some sort of legislation will fall in place forcing Apple’s platform open, but given that they’re implementing RCS I somehow doubt it.

Further, we know nothing about Beeper as a platform. It can/could speak with iMessages, but then what? How do we know it’s secure? Because the owner of the product says so?

If the idea is to get secure and encrypted messaging between an iOS and an Android user, why not go for something like Signal that’s open source?