Yeah, I wasn't saying that Cell was a dead end to be dropped. There are possibilities. My only point was that the idea "Sony must use Cell because they've already invested billions in it" is poor management, and prior investment should not be considered as the only reason to go a specific route. No doubt that investment will have moved your tech in a useful direction and maybe made it competitive, but the fact a company spends billions on an idea doesn't mean it has to carry through that path as Heinrich4 was suggesting.
Agree cell there are many possibilities(4 PPCs much more eveolved + SPUs etc) cause Sony does maybe consider not the entire cell but part (SPUs,EIB etc at end its a "heart" of cell) of this technology for the PS4,we need to remember they bought back in December 2010 a Toshiba factory, perhaps a mere preservation to provide items to ensure the ps3, but maybe something more in this movement.