rolf wroteThe wii choice of games might be due to other factors then the controller!!
Its not the only factor and is
THE major factor is bringing in casual crappy games. Think about it:
Motion controller (simple) --> New gamers --> casual gamers --> casual games --> more casual games --> more casual gamers....
In addition, casual games are dirt cheap to produce, especially in huge companies, which will attract even more companies to produce casual games.