I am a PS2 owner and will be switching to the Wii, also all of my friends a PS2 owner's and most likely to get a PS3. I'm not backing up the Wii because I'm getting one but I jsut want to be on the winning side.
This is my opinion:
I think most PS owner's are probably gonna stay true to their system but I think about half of them are gonna grab a Wii anyway because they are the type of owner's that want everything. The majority of XBox 360 owner's are gonna get a Wii. So the Wii and PS3 are gonna be tied in first place for the first 6 months or so. New gamers are more than likely to grab a Wii because of price and innovation and also because it's more suitable for new genneration kids (which by the way takes up alot of the market). This is why after 6 months the Wii is gonna sit in first place and be the most sold console of all time! I think this is what Nintendo's prediction on the Wii.