lol
no
Nintendo will be fine. the fact they reported they're first annual loss, ever, means nothing in the grand scheme of things.
partly dominating the handheld market? as far as dedicated portable gaming platforms go, its running that shit (no, smart phones don't count, those are PHONES) and the Vita is no competition at all, it'll fail like the other two PSPs did and for the same reasons
as for the console race >.> Nintendo is the only one that made a profit of they system, no they didn't have the brown-a-thons the PS3 or 360 had (when it wasn't RRoDing) but a funny thing, Sony and Microsoft, don't own the rights most those big sellers, so 'how much they sold', doesn't really mean shit for them profit wise, and make no mistake, both Sony and Microsoft have been losing money on they consoles. a LOT of money.
in short, you should be more worried about your PS3 or 360 not being around much longer, not Nintendo