The crash was caused by ET only
I kid, I kid.
I'm not saying port every Final Fantasy from the NES version onto the SNES, PS1, PS2, PS3, Wii, etc., but more like "if X game is being made for the PSP, we should also put it on the PS3", which would still keep it exclusive to Sony.
I know the GCN has the Gameboy Player to play your GB, GBC, and GBA(?) games, but it's not compatible with the Wii (though I believe there is something made my Datel for that...not sure though). I would've thought Nintendo would have made a GB/GBC/GBA/DS attachment for the Wii to play those games on your TV, which would also open the market for people like me who don't want a DS (I can afford it, I just don't want it) but can still enjoy the games.