https://www.gamespot.com/articles/nintendo-talks-cross-play-says-conversations-with-/1100-6460285/

Cross-play has been and continues to be one of most buzzed-about topics in gaming. Microsoft and Nintendo work together for Xbox One-Nintendo Switch cross-play with Fortnite and Minecraft, but Sony is still on the outside. Now, two Nintendo executives have spoken about the appeal of cross-play and how conversations with other companies remain ongoing.

Senior executive officer Susumu Tanaka said during a recent shareholder meeting that generally speaking Nintendo is enthusiastic about allowing cross-play with Nintendo Switch and other competing platforms. However, Tanaka acknowledged that all parties have to come to an agreement, and this can be a sticking point.