Seriously, what's their deal?
I have it on good authority that one of the largest sellers of Video Games and Video Game Accessories looked into getting special edition "Wii-White" WaveBirds for the release of Smash Bros. Brawl and were shot down by Nintendo, stating that the WaveBird molds had all been destroyed. This retailer ended up with crappy Pelican Wii-White-ish wireless GameCube controllers though.
This same retailer also tried to get some "Player's Choice" two packs of some of the best selling GameCube titles. Seriously, copies of Pikmin 2 are going on eBay for $50... why the heck wouldn't Nintendo go back and republish some of the harder to find GameCube titles for the Wii? Any of the Mario Sports titles would be great sellers, and Nintendo could sell them in two packs for $50 or something and make some money.
Then, in addition, Nintendo won't let Publishers re-release GameCube titles with packaging that refers to the Wii. And I'm not even talking about super-awesome packaging like what MookyJooky from CAG came up with:
I'm talking about just slapping a sticker or something on the package and calling it a day. Nope. No Wii on GameCube game packaging.
This greatly limits the ability of publishers to sell their older GameCube stock to retailers. Which is sad, because a big chunk of the GameCube library is better than a big chunk of the Wii library at this point.
Then, the was rumors that one publisher was looking into releasing GameCube games that, when played in the Wii, you'd get special content. Apparently Nintendo put the hammer down on that idea real quick.
Seriously, why even bother to make the Wii backwards compatible if you're not going to allow people to do anything with the feature?