When you look at the Wii you can see that that it has been designed to appeal the japanese crowd: it takes little space, is cheap, and has a lot of party games (and the japanese love party games like karaoke and such).
Also Sony kinda missed the ball with the PS3: too expensive, too big, nearly no party games, not many title for hardcore gamers.
If you have a PS2 the only things you get extra when upgrading to the PS3 is online play and HD. This is probably not enough to convince gamers to pay that kind of money and place such a big machine in their living rooms. The Wii on the other hand propose something different, which appeals more to the public.
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This could be expected.
When you look at the Wii you can see that that it has been designed to appeal the japanese crowd: it takes little space, is cheap, and has a lot of party games (and the japanese love party games like karaoke and such).
Also Sony kinda missed the ball with the PS3: too expensive, too big, nearly no party games, not many title for hardcore gamers.
If you have a PS2 the only things you get extra when upgrading to the PS3 is online play and HD. This is probably not enough to convince gamers to pay that kind of money and place such a big machine in their living rooms. The Wii on the other hand propose something different, which appeals more to the public.