Because they already have Zelda? Variety sells consoles much better than just having a load of games from a single IP.
Besides, with this Switch re-release Bayonetta 2 is probably going to end up closer to 2m than 1m, which I'd expect would be enough to have easily made it profitable.
Pokemon, Wii Sports/Fit and animal crossing disagree. Nonetheless Bayonetta is pretty cool, but I doubt it well move many consoles. A bit like Ratchet and Clank PS4, The Last Guardian perhaps even Bloodborne and probably Dreams and Detroit. All pretty good games and one of the best 8th gen games. But to say they moved many consoles is doubtful.
Please excuse my (probally) poor grammar