You could make the same argument about having an Xbox when Microsoft already deals with computers. Why have a separate console when you can have a PC that does the same and then some?
Nintendo's first party IPs are partially what keeps it alive. Think about it. Mario and Mario Kart have more or less been the same for generations, yet people (including myself) keep coming back for more.
Also, the Wii marked a decided family-friendly focus for Nintendo. Everyone complains about Nintendo's online ecosystem being so abysmal. This is rightfully so. If you look at it from the perspective of a parent with children, it's basically the perfect platform. Aside from their IPs, Nintendo consoles don't offer much for older gamers that Sony and Microsoft does way better. However, Nintendo consoles do get tons of games that are child- and family-oriented.
+1 for Beej. I barely knew C when I enrolled in network programming, so trying to fill my C gaps alongside learning network programming was challenging. Someone recommended Beej. Then it was just a matter of C.
So, when one train operator asked for a photocopy of a passport, he convinced it instead to accept a postmarked envelope addressed to the "victim".
A postmarked envelope? This is baffling to me.