The Wii U totally missed the mark and didn't achieve the market penetration its successor did. However, Reggie Fils-Aime of Nintendo of America, has said that their upcoming home console called The Switch, will not meet the same fate because it appeals to all groups of people.
Now Reggie is a master PR guy and can spin anything into a favourable thing so people need to take this with a grain of salt. The Switch and The Wii U looks a lot similar, and considering Nintendo stock price fell down after the reveal, things could be tricky for them.
Here are the possible Nintendo Switch specs. Earlier we speculated whether The Switch was really an innovative product or not.
In the first sentence, did you mean "predecessor" instead of "successor"?