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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On a more serious note, Nintendo has a pretty good track record for consoles considering how long they've been around.