This is going to be a tangent so bare with me.
As of late, been really getting into motorsport. World Endurance Championship and International Motor Sports Association, mainly. A lot of manufactures have jumped into a new set of regulations (the Hypercar class and Grand Touring Prototype class) have have been battling for wins in the last two years. One of those manufactures is Porsche, and unlike the rest of the grid (for now), they are the only ones that field cars that are privately owned, operated and run. They are the privateers. They are customers of the 963, the Porsche LMDh prototype.
Now why is that important? Because as a part of the purchase of the car, Porsche has at least one engineer on site for every single race in each of the privateers pits on top of other supports.
Why is this important? Because I get the feeling that Nintendo wants to do something similar here. You call them up, agree to have a game on the platform and Nintendo will bring in at least someone with porting expertise if you need it to help bring the game to market. That kind of thing is invaluable and it has been something that developers have bemoaned about before.
As a german i totally can understand your example with Porsche
No, but for real. I think that is exactly one big point, what Nintendo wants to do with Shiver!! Like, outsourcing their workers to other 3rd party game developers.
Of course Shiver will do other work as well, make own games, or do a 3rd party game port totally on their own, but your example fits perfectly (from a noobs perspective like mine)