That was exactly my and some others point aswell that has just been proven, thank god. It would make no sense to drop a healthy eco system like this after, some said, 4-5 years, since its selling so many games because of merged market. If they supported a 3DS for 6 years while it never was as hyped and healthy as the Switch (needed a price cut etc etc), no way Switch will die before 7 years. I think we can expec an upgrade similar to the PS4 pro in 3 years with the arrival of the other next gens. Would give them a way to rivalise in terms of sales. With peaks higher than 20 millions and legs it will definetly pass the Wii.