This is a sweeping judgement that is largely based on an Internet stereotype. Poor third-party sales on NIntendo consoles does not imply that Nintendo fans do not and would not want games not made by NIntendo if the Wii U did not exist. Their preference for NIntendo games does not imply a dislike for all others, even if some might seem like that. Many NIntendo fans have a secondary preference for another console (and buy ither games there) and/or like NIntendo-like games not made by Nintendo (i.e. Rayman, Kingdom Hearts...). I personally like JRPGs and some Sony exclusives, which I for the most part can't get on the Wii U.
Your conclusion that most NIntendo gamers would quit gaming without NIntendo is actually quite ridiculous. This might be the case for some, but you make it seem as if the demand for interactive entertainment would largely disappear into a void. What is to say that those who don't already wouldn't just develop an interest to NIntendo-like ganes on other platforms? Furthermore, you seem to imply the assumption that NIntendo's non-existence would not cause another company (lkely a Japanese one) to fill that void with similar games,
It certainly is not "clear"; that's just your opinion.
Aside, you seem to have this belief (that a lot of PC gamers have) that consoles mostly only exist for exclusives and that, without them, consoles would die quickly and everyone would migrate to PC/mobile or quit gameing entirely. That a brand is almost worthless without its exclusives (no matter how much it associates itself with third-party games). That people don't really value a budget properitary console built specifically for gaming, and that every would readily accept and embrace the PC environment if only we just got rid of consoles. Do you really think that the general consumer sits there deliberating intensively over which consoles have which exclusives, "objective" cost-to-value ratios, mulling over specs and genres, and so forth? Or do simply look and choose what is popular convenient, affordable, and looks fun? Gaming devices have different properties which influence how they appeal to different people. That goes beyond the simple "numbers games".
Gee, I guess stereotypes aren't based on data then ... /sarcasm
Most customers AREN'T multiconsole owners so Nintendo gamers having little to no interests playing games on other consoles is the actual case. Why don't you bring some evidence instead of trying to work around my argument with an anecdote ?
FYI there's no other company like Nintendo that can be replaced and not a damn company will be able to fill the void either because Nintendo content have their own identity compared to the lifeless clones out there.
Are you implying that I'm a PC gamer ? FWIW I wasn't hiding that fact. If I truly valued that belief of consoles only existing for exclusives then I obviously wouldn't be condemning the WII U so much but that's not the case apparently. What did all of that have to do with the original point ?