They struggled to deliver the same pace of development when GameCube came out. Nintendo lost confidence and let Microsoft buy the controlling share [1]. They haven't been the same since.
Dinosaur Planet, an unreleased Rareware N64 title, has recently resurfaced [2, 3]. I've been meaning to give that a go.
[1] This is a fantastic video essay on how the Nintendo-Rareware split happened: https://www.youtube.com/watch?v=RIt4sSVpors
[2] Here's the trailer of what Rareware turned into Star Fox Adventures. This game feels like it had more soul: https://www.youtube.com/watch?v=rKFJx-FQ86w
[3] Some coverage: https://www.youtube.com/watch?v=bkiPTtrunPg