Even still though, we don't know that Cell (or an evolution thereof) will carry over to the PS4. Remember Sony supposedly was conducting that developer survey a while back, and periodically there have been rumors of going to a different architecture. We'll see though.
I've suggested this before: They could always go the route of 8 SPEs and loads of regular cores. Backwards compatibility
and more developer-friendly.
The cost sunk in PS3 will never be recovered. The dependence on blue lasers for the BluRay drive cost a bundle, both in initial BOM and in insufficient volume to compete with Microsoft early on, leaving PS3 to play catch up for the rest of this generation.
Then you have the debacle with the GPU. It is interesting to read media from three years ago, press reports of Sony using TSMC as a "second source" for RSX. That is putting positive spin on a very dire situation. The truth is that Sony's fabs had a costly upgrade to produce CELL, then sold to Toshiba for a song because it was under-utilized. Makes you wonder. Why second source when you have a half empty fab?
I'm guessing that RSX was such a late contingency solution that they didn't have time to transfer the RSX design to Sony's fab and that TSMC initially was the
only source. That however is speculation on my part.
Notice, none of the above is down to execution problems, it is
all because of bad design choices.
To sum up, PS3 has:
1. Cost Sony billions.
2. Finished Sony as a semiconductor company
3. Only managed to end up third of the three platforms.
No wonder Kuturagi were fired,
Cheers