Strike while the iron is hot, not when it's Cold!
Personally, I think this is Nintendo had better sort sooner rather than later for it's customer and their own long term good.
Unprecedented demand and short supply are great for marketing and Nintendo's morale but leaving this situation too long could have an equally detrimental effect as well. Now that the Wii is out, the novelty and interactive element of the Wii will soon wear off and it's the games and game innovation that will be left to be the buy-in element.
Nintendo should REALLY be doing everything to "strike while the iron is hot" and get the Wii into as many hands as possible and get them buying games for it (where they REALLY make their money as opposed to marginal profits on hardware sales) else lose lots of "potential" customers.
I, for one, have almost lost complete interest in the Wii largely because of not being able to get hold of one because the novelty and buzz has now gone (and because Zelda: Twilight Princess was released on the Gamecube as well which is dirt cheap and readily available, not because the PS3 is almost out - £450+ ?!?!?! Are they mad?) They could still surprise and suddenly flood the market the week of/before the PS3 release :) but who knows.
The longer they keep this hardware shortage up and try and pacify people with "unprecedented demand" statements (it's going 3+ months now), the more likely Nintendo could lose (potential) gamers to indifference, "readily available" platforms or books. I'm sure I'm not the only one.
Personal thought.
tav