IMO, C=USA will not be able to make significant money buy selling Amigas with Linux. It needs a custom OS that will be different.
See, this is the bit I still don't understand. A new, custom OS is great, it means it might actually be Amiga-like in the same way that AROS is... But what software will it run? If it's not based on Linux or something similar, how will it run OpenOffice, Firefox or any of the creativity software the new "Amiga" is supposed to be created for? Or is the CUSA development team going to develop the whole OS *and* port all these huge apps and all their dependencies? If they don't port the apps it'll be in a worse state than AROS is for launch. And that's not going to make them significant money either.
Look at Haiku: Several years in the making, it's only at Alpha 2 release, it has an out-of-date browser which has just been replaced by a newer, sometimes unstable one, and an unusably unstable office suite. I know it's largely a volunteers project, but do CUSA really have the developers to pull that off?