Re: Nintendo - Done for,.
They're as "done for" as they were when the N64 didn't sell fast enough. Likewise with the Gamecube, it didn't really fly off the shelves at any point. Neither system was a market leader but neither system bankrupted Nintendo.
Nintendo were massively successful with the Wii. They probably won't do that again in terms of selling into the casual market and shifting expensive peripherals. But for all those who love Nintendo games there isn't an alternative and that's what will keep Nintendo afloat.
If Nintendo software becomes shit, that's when they're done for.