Why are people still talking about 10 year plan and futureproof? This was, is and will be PR-talk and nothing else.
The customer decides which console will have the longest lifetime. The Xbox was more futureproof than the PS2 and the PS2 won. The PSP is more futureproof than the DS and the DS is winning big time.
There is no such thing like futureproof. The proof is the cutsomer and you can't force them to support your product. The Wii is raping the Xbox 360 and the PS3 today, even though it is the console with the worst hardware (technically).
And the 10 year plan is just another PR quote. I think the PS2 just turned 10 years old a few days ago. The major support for the console stopped 4 years ago. The PS2 still sells decent numbers, but it is far from being relevant today. It dominated its generation like no other console before so why do you think the PS3 will last as long as the PS2 when it might end up selling only 40% of the PS2? It still could be in 3rd place by then. Why should a 3rd placed console sell longer than the no. 1 and 2? It might be technically better in some points, even though the gap is tiny for none hardcore gamers, but the customer does not see the value in it. He did see the value in the PS2 and does see the value in the Wii though. We have to agree that the demand for a Wii is higher than for a PS3.
3 years from now on:
Do you think retailers will drop the Wii, even though the demand is still there, and support the PS3 with less demand, because it is technically superior?
Do you think Sony won't launch a new console just after MS and Nintendo released their new machines?
Do you think Sony will support the PS3 after the PS4 AND the PSP 2 launched?
SO please: It is not the manufacturer who decides how long a console will last, it is the customer. You can't make 10year plans when the customer does not want you product 6 years later. And futurproof is something that the customer want and not a new technology.
OT: It could be that the PS3 catches the XBox 360 and it could be the Xbox 360 stays ahead, but it won't be because of a 10yr plan and "futureproof" technology.