Nintendo has Mario and Zelda and Pokeman and... well all their first party stuff, in the long run they will prevail regardless, add some exercise games and now they finally have HDMI 1080p for Netflix so I don't think they'll be hurting anytime soon, sure it's not what they anticipated but they'll be alright.
Edit: also they always end up getting the Japan market which is hard to crack for even Sony.
Back to the Specy, I started with the ZX-81 and then the Spectrum, wrote my own emulator and tape reader back in the late 90s (never published) but even if I knew every byte of the rom code at the time, it's obsolete now. Nostalgia, well yeah and it's for a good cause apparently, still I think I'll pass.