It's not just about the money to them, each game is their pride. Someone gets it.if you truly think this would happen you clearly dont know much about japanese buisness men.
these are the people who said f it were making our own system when nintendo decided not to go with their cd system (sony)
they are very proud people, IF and this is a serious if nintendo ever went 3rd party you can guarantee the games would be shitty as hell because all the people who have the biggest influence on their games would quit, many of them have said if it ever happened they would just retire.
if nintendo got out of the console buisness what they would do is just make games for the 3ds.
people complained about the wii well the 3ds is just a little bit better than the wii in terms of power so if they stopped making consoles all games would essentially become wii games.
the wiiu may be in a tough spot now but the 3ds is the fastest and best selling console on the market, they are making tons of cash and have tons in reserves.