This editorial speculates that Sony and Microsoft are working on new innovations themselves in console controllers. If this turns out to be true, then Nintendo could certainly be playing catch up in an instant.
Never before has there been such a difference in how games are played across systems. With game companies naturally wanting to include the best parts of their competitor’s designs, while still offering their own variety of gameplay, it’s natural that there would be a pushing force, trying to center all the consoles around one type of control medium. This is also advantageous to third party producers who wish to produce games for several systems instead of just one.