NES, SNES, N64, GC, Wii. All sold extremely well and were very successful. The switch will be no different. I know they've all be successful because I've never even heard of anything else by Nintendo!
Also, their handhelds have been only amazing and always improve so no need to list those.
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to be fair. the switch it self seems actually pretty good. it's the way they plan on supporting it that will be the troubling part. Oh and the terrible online service.