If the open source community could provide such a thing for free I think they would have done it already?
But presumably they lack the ability, the motivation or both.
They did. That’s why Beeper Mini exists.
https://github.com/JJTech0130/pypush
https://jjtech.dev/reverse-engineering/imessage-explained/
https://www.wired.com/story/beeper-android-iphone-texting-blue-bubbles/
As much as I want it to he open source what could the risks be of apple finding a way to patch any exploits by looking at the open source code
I believe it’s a system that uses an actual Mac as a server for relay. Not really a way for them to stop that, and I doubt they care that much since it requires someone to have a Mac.
That’s how Beeper works. Beeper Mini doesn’t do that and instead imitates the Mac software, which is why Apple broke it.