Even though he was PURE EVIL, Yamauchi built the modern video game industry with an iron fist, using nothing but brute force, greed, and the power of the dark crystal. Nintendo could have destroyed the universe if Iwata hadn't taken over and changed the course of history.
The Trinity used to be Yamauchi as G-d of Business, Yokoi as G-d of Hardware, and Miyamoto as G-d of Software. Nintendo needed all 3 to become the monster it is today.