There are a lot of decent games on Wii that just didn't sell well.  This is my take.

I think I should explain the benefits and consequences of price cuts first.

If the price remains the same, then there will be a higher marginal revenue (revenue per unit) but a faster drop in the sales rate.

If the price is cut, then you may or may not see an increase in the quantity demanded and the MR will go down.

Eitherway you are risking lowering revenue.

So what can be done to get more revenue out of an existing product?

First Scenario (Combo Deals):

Repackage games into two-packs.  Existing single can sit on the shelf at the same price, but the combo will be a little bit more. than one individually.  Otaku can buy the one packs for the box art and instructions (etc.) and regular consumers may be compelled to try a new game.  The latter is particularly interesting because it can build up the "brand" of the IP.  It can also build the reputation of the publisher as one who provides a lot of bang for the buck.

Combos are nothing new, but are usually a combo of two or three really bad games.  This would be an attempt at a longer term marketing approach.  Getting Wii owners (Casuals and Traditional Nintendo Fans) used to the idea of buy games from other companies.

Examples:

Okami/Zack & Wiki

Bully/Manhunt 2

The Bigs/Table Tennis

Tony Hawk Proving Ground/Downhill Jam

Second Scenario:  Creative Marketing

By that, I mean copying Nintendo.  Get people to introduce other people to your games.  Create a sense of community among people who play your games and make them your free little orators.  Pay money for in store displays like Guitar Hero and Rock Band. It's cheaper than TV - but works best with TV.

This would be more appropriate for sports games and other multiplayer games.

EA, Take Two, Activision could benefit from this.

Third Scenario: Demo Discs

Nintendo Power = untapped resource.  Nintendo Club Members, Wii owners on official third party forums, etc. etc. etc.  Core gamers are funny, they would rather buy a mediocre game they know than a good one they've never played.

Xbox and Sony both had demo discs in the past and demos online now, Nintendo is missing this and it is one of the biggest reasons why third parties go ignored.

I think example 1 and 3 seems to be the best way to up sales.

Oh, and for god's sake Capcom: Advertise Okami on TV and put some Videos up on the Nintendo Channel

How do you expect non-forum goers (who out number those who goto forums) to know about a game if you don't tell them?