Nintendo showed that they have a lot of support of 3rd party publishers . But according to tweet from Randy Pitchford Gearbox Software isn’t a priority at the moment. When a fan asked the Gearbox President on twitter if Borderlands 3 was coming to the Nintendo Switch Randy Pitchford replied that communication stopt for some reason, and doesn’t see Borderlands 3 coming to the system.
I do not see that as happening. We were talking to Nintendo, but that stopped for some reason. They have other priorities.
— Randy Pitchford (@DuvalMagic) January 15, 2017
Borderlands is developed by Gearbox Software and published by 2K Games, which is a subsidiary of take two interactive and they are listed as one of the 3rd party supporters of the Nintendo Switch.