Instead of Media, let's have a publisher's opinion:
This comes from Danny Bilson at THQ
'And then the nightmare of all for third parties, frankly, is the Wii. The Wii is a Monopoly box in a closet! I've got my Wii Sports and I'm good! I take it out, get the family around, we flail around for a couple hours, and we're happy until next month when we take it out, or maybe for junior's birthday, I'm going to buy him a Mario game.'
Bilson stressed that THQ is "supporting the Wii" and is planning to "greenlight more Wii games: family, casual, get everyone on the couch games. I'm a big believer in that." He continued, " Right now, we're not moving hardcore stuff to the Wii. We were; we stopped it, just because we're a little risk averse. I want to be with the culture of the Monopoly box in the closet – I've got to feed them. I've got to get them to want to buy another game, because they're not the gamers that are looking forward to the next thing next week in putting in the pre-orders and all that."