I think after unifying their hardware/software divisions, Nintendo's new approach is going to be to position the old platform as a budget device aimed at children and their new platform as their new core device; sort of like what they're doing with the 3DS and Switch. So when they say "we want to support the Switch for longer than a 5-6 year period", what I think they really mean is "we'll keep on supporting the Switch with cheap to develop games and child-friendly software while we pour the majority of our resources into our next platform".