I hope that continued advancements in AI make it impossible for outfits like Apple to maintain closed systems that lock the device owner out of having any control over their own hardware. We're obviously not there yet -- I'm sure 1000 things won't work on a device with this running, but it's going to be a game of cat and mouse, and mouse is moving a lot faster than cat can now.

Decompiled and easily available if you know where to look? Sure. Seems likely.

But "Open Source" is a description of the licensing terms, and it ain't gonna be that. Apple will sue hosters into oblivion. It will only be available on pirate sites.