The problem started before the Wii was released, most third parties had treated the Wii as a dumping ground for second rate games (those that would've cost too much and not sold enough to justify releasing them on the HD consoles), or as a "casual" system for cheap and cheerful games, and everyone else just disregarded it.
Once the Wii came out and was a huge hit, third parties found they had missed the boat. They had invested their biggest franchises to the HD consoles, luring their fans towards those systems, fans who would complain if third parties tried to shift towards the Wii; they had put cheap second rate games on the Wii, which alienated the Wii owners who focused on Nintendo, the only company that put AAA effort into the Wii. Now, four years after the Wii's launch, third parties have simply shrugged their shoulders and now consider the Wii as unrecoverable, believing that a successor for the Wii will show up long before they could change direction and salvage the situation.
This is why you hear so much about a Wii 2 or WiiHD, the third parties want Nintendo to hurry up and release new hardware, which they see as a fresh start for their games on Nintendo consoles. This is why the 3DS seems to be getting better support: it's a new Nintendo system, and third parties cannot afford to let it slip by, otherwise they'd be shut out and have to wait another 6-7 years for another handheld.
Veder Juda is hand crafted from EPIC FAIL, and is a 96% certified Looney; the other 4% is a work in progress.
