One thing a lot of people don't consider is that many publishers have over-done the (so called) "Casual" games on the Wii because of how successful it has been with unconventional gamers ...
If you go back through the generations you will see that most third party publishers have desperately tried to make games which appealed to people outside of the conventional gaming demographics and have had very little success. Many of these companies realized a long time ago that unless the game market grew beyond its traditional boundries there was a limit to how large the industry could become; but they were trapped because they had no (real) knowlege on how to break into new markets.
Many publishers (at the moment) are so focused on developing the Madden/Halo/GTA for the (so called) "Casual" gamers that they would ignore the oportunity to produce a highly profitable multi-million selling game for the Wii unless it falls into a genre that conventional wisdom tells them (so called) "Casual" gamers are interested in.
Essay Pro