@Sharky: It's rather irrelevant what the hardware manufacturer plans to do, when it's the market that decides how long a certain product lives in the market. As others pointed out, NES was supported 20 years by Nintendo, but it had been dead in the market years before Nintendo dropped support. NES had its last game in 1995, 8 years before the hardware support ended.
Now, the ten year plan is just marketing talk, since ten year plan, as people view it, as supported by the market is out of Sonys control.
And as already stated, N64 was more powerful than PSX. N64 had its certain downsides in comparision to PSX, such as smaller capasity media (which was partially offset by high compression rate N64 supported) and certain hardware bottleneck, that was hard to go around (resulted in another 1st party microcode that dealt with the problem, but was wery expensive). The downsides were possible to go around, as a proof, RE2 was ported to N64 to a single cartridge and higher polygon performance (than PSX) of N64, but they resulted in very high cost of developement.
And the biggest upside of N64 was it pushing out effects, by standard, that weren't even possible on PSX and all this without the need of cutting from its other performance.
The situation is a little similar that it is with current gen. PS3 is the most powerful of the three, but in order to tap its power, you're forced into expensive developement. From technical standpoint, PS3 is somewhat a masterpiece, just like N64 was, but from a practical standpoint, it's far from it (like N64 was).
Ei Kiinasti.
Eikä Japanisti.
Vaan pannaan jalalla koreasti.
Nintendo games sell only on Nintendo system.
