Where is the market for CUSA ARM devices? a C64 tablet? Amigaphone? If that company is going to succeed, they better sell the crap out of the only product that has any value to it, that being their C64 "Retro" machine. Jumping into the ARM market would be no end of retarded for them.
I agree with you that it would not make sense for C64 series. Depending on how well WB6 turns out, could be the key for mobile and AIO ARM devices. Primary thing is to recognize early on that ARM is a viable arch for low end machines (AIO or mobile) and the OS should have full support (which would include touch) for the UI design. That way apps/games developers can make their decisions on what they will support from concept onwards.