youji itami said:
Snip
Actually they would need the GPU as well for 'full' BC and that is for PS3 BC only for PS2 BC would require the all in 1 SoC from the PS2 slim so that's 3 chips which would require a larger motherboard and a beefier power supply plus an enlarged case.
It all adds up quickly and there is no guarantee that even if Sony were able to keep the price down to 'only' $500 with BC that it would sell anywhere near as well as the PS4 currently is.
Well I didn't say it was "easy"... I meant that it sounds manageable. I bet they could find a way for the PS4's GPU emulate the PS3's, since it is better (to my recollection, the PS3's GPU wasn't known to be that great, with the Cell helping out with the graphics in the more demanding games, like the Naughty Dog's ones) and they would have a shit-ton of RAM available.
The CELL architecture seems like a beast to emulate but, to my knowleadge (as a layman), the rest of the PS3 doesn't share the same complexity. And the PS3 seems to emulate PS2 fine, even the newer models without the emotion engine.
And you don't NEED to have everything working at the same time... Shutdown the CELL when you are playing PS4 games. No problem with overheating, no need for more power supply.
Sony has been working with that hardware for nearly 10 years. They COULD have figured a way around these problems. And I, personally (as a layman, again) think they could have made it happen cost efficiently.
They ditched backwards compatibility because, in the end of the day, they figured ou that it was not interesting for the market.
They DON'T want you to play the games that you already paid for. They want you to buy new ones, or pay again to play the same games (remastered, or via PS Now, or Nintendo's Virtual Console)
There is little profit to be made from backwards compatibility (since great old games are dirt cheap and constantly offer hours of fully-fledged experiences), and the industry finally figured that out, unfortunately...