We will in a world where the fittest survive, and the weak die out. With more competition, games get better because the standard goes higher, and people who can't keep up drop out.
In the late 80's and early 90's, Nintendo's games were a step above everyone elses. They were the best, and the sold the best, simple as that.
However, like many Japanese companies, seniority is given too much power. Old devs who ran out of ideas a long time ago, are still leading big projects, despite newer devs being more capable. So as a result, Nintendo games have started to become the same, rehashed, redone. Mario is Mario, Zelda is Zelda, and Nintendo continues to heavily rely on old old IP's.
Nintendo deserves poor sales with the Wii U because they just brought the standard down too much. Every console prior to the Wii U launched with at least 1 AMAZING game, often times 2 or 3 great ones too. Wii has Twilight Princess and Wii Sports, GCN had Smash Bros, Pikmin, and Luigi's Mansion, N64 had Super Mario 64, and the list goes on... Wii U had nothing, what else did they expect? They deserve poor sales because they didn't deliver a product worth buying
When more games release for Wii U, I'm sure sales will jump. However Sony and MS have taken this opportunity to attack as well, and PS4/One will release strong and hard.
Nintendo made mistakes with the Wii U, they deserve poor sales, but they can redeem themselves. Altus developing SMT x Fire Emblem, Namco making Smash Bros., Monolith Soft making a AAA JRPG exclusive, and publishing all of Platinum Games exclusives are clear signs that Nintendo might be changing to meet that higher standard gamers expect today. I hope Nintendo does more of this, Retro Studios developing Metroid Prime was one of the best decisions they made in recent years, and Monolith Soft/Platinum Games are also great studios. Nintendo needs to give more projects to the new guys, and I think they will.