I think Nintendo often takes more risks in terms of gameplay and hardware because they don't follow industry standards, which is also a major weakness. On the other hand, I think there is a major difference in hiring staff since they often tend to hire designers and non-gamers to make games. Companies that hire game fans of their previous works tend to stagnate and usually end up improving or enhancing what those already loved during childhood. This new IP thing is pretty new since Splatoons success. In recent years Nintendo also experimented with plenty of ideas just adding Mario or Pokemon to the formula. Having such strong mascot(s) that usually push sales easily over 1 million, helped Nintendo a lot over the past decades. While the Monster Hunter spinoff, for instance, flopped hard.