Apparently, it seems Nintendo was the one preventing most third party devs from porting games to the Switch 2 by not sending them dev kits. All because they want the Switch 2 user base to grow larger before flooding the system with ports. Many leakers seem to say the same thing. Does Nintendo really expect the Switch 2 to sell 20 million with just Mario Kart and Donkey Kong?

https://famiboards.com/threads/df-says-that-lots-of-devs-are-still-struggling-to-get-switch-2-devkits-including-some-big-aaa-devs.14812/page-2#post-1956685