I don't really agree that the Wii U has been a failure. The console has definitely struggled to compete, but that doesn't necessarily mean it hasn't been profitable. According to Nintendo's last financial report:
https://www.nintendo.co.jp/ir/pdf/2016/160427e.pdf
To date, Nintendo has sold 12.8 million Wii U consoles, and sold over 84 million software titles for it. The financial statement shows that the company was profitable both throughout 2014 and 2015. Part of the Wii U's performance in the market is because it has more exclusive game titles than any other console on the market, which has helped it stay afloat. As such, it doesn't seem accurate to say that the Wii U has been a failure or that it hasn't been profitable, when that simply isn't true.
It is accurate, however, to say that it has not been particularly successful, because the other competing game consoles have performed much better in the market and achieved higher sales figures than the Wii U in a shorter period of time. But, a game console doesn't necessarily need to be the best system on the market to turn a profit and keep the company in business.
The performance of the NX console in the market will be crucial to Nintendo's position in the industry over the next few years, however, as the financial report also shows that the company pulled a significantly lower profit this year than it did last year. This means that Nintendo's market position is weakening, and it needs the new console to keep it in the game.
https://www.nintendo.co.jp/ir/pdf/2016/160427e.pdf
To date, Nintendo has sold 12.8 million Wii U consoles, and sold over 84 million software titles for it. The financial statement shows that the company was profitable both throughout 2014 and 2015. Part of the Wii U's performance in the market is because it has more exclusive game titles than any other console on the market, which has helped it stay afloat. As such, it doesn't seem accurate to say that the Wii U has been a failure or that it hasn't been profitable, when that simply isn't true.
It is accurate, however, to say that it has not been particularly successful, because the other competing game consoles have performed much better in the market and achieved higher sales figures than the Wii U in a shorter period of time. But, a game console doesn't necessarily need to be the best system on the market to turn a profit and keep the company in business.
The performance of the NX console in the market will be crucial to Nintendo's position in the industry over the next few years, however, as the financial report also shows that the company pulled a significantly lower profit this year than it did last year. This means that Nintendo's market position is weakening, and it needs the new console to keep it in the game.