Nintendo from 1985 until the mid 1990's was arguably the king of the video game industry in the home console market then they lost sight ! As some here may know, Sony and Nintendo had a deal to include a cd drive add-on for the SNES that was named ahem Playstation but then Nintendo backed out of the deal and Sony went ton to develop the Playstation as their entry console into the gaming industry and the rest is history !

While Sega and new comer Sony unveiled cd based consoles, Nintendo opted to stick with their very successful cart based business model and when game developers realized they could make cd based games far cheaper than N64 cart games, it was game over for Nintendo who then went on a campaign of quality over quantity !

Their ineptness and refusal to embrace technology to their consoles has ultimately doomed Nintendo !

Their colossal failure with the Virtual Boy was the beginning of the end for Nintendo in terms of innovation !

Lastly their continued alliance with their kiddie themed in house franchises kept them relevant but now as more adults are becoming gamer's, no one just wants Mario, Donkey Kong, and Zelda as their only outlet for gaming and sadly Nintendo doesn't quite get this !

People who grew up with Mario, Zelda and DK are now adults who do not want to play the same kiddie themed games they played as kids !