Anyway no where does it say that other Oses cant be run on the Aone or that no firm can port there OS to it.
its just that the Aos must come with the Aone no matter what other Oses & SW is bundled with it. AmigaOS must be one of the products.
Just like the Pegasos, MOS must come with it.
the protection is not to stop other oses from running on the Aone, its there to stop Aos from running on other HW.
So infact the Aone is open, but the Aos is not.