Some good interesting posts - thanks, i was worried i'd get none!
By the way, i'm not into Playstation games, but i do admire the strength of the Playstation brand and the guts it has taken to launch a console that is so well spec'ed. I own a Wii and 360 and am happy with my lot.
I'm surprised that everybody is so 100% convinced that Nintendo have got the market sown up so soon into this generation, considering Sony has done precious little in terms of marketing the console over the past 6 months or so. Also I think you'll see a big fightback as they tackle the serious software issue they have right now.
I do not think the Wii will "stop selling" as some people have misunderstood. I think sales will drop off once PS3 technology starts to permeate the mass market in a few years time. Yes, Wii may be way in front in TOTAL sales by that point (5 years from now), but Sony are planning a 10 year lifecycle for the PS3 which is very attractive for publishers and retailers. (You've got retailers in the UK like GAME literally ramming the PS3 down your throat when you enter the store which will rub off on ).
This is why i think Nintendo will not rest on its laurels, at least i hope they don't! I'm sure they are all too aware of the Sony threat
Finally, I know i'm speculating but aren't we all? Unless you have a crystal ball that is!
That flies in the face of all reason. A system only gets a 10 year life cycle if its in a dominant position in the market. This occurred with the NES, PS1, and PS2. Marketshare, not technology, determines the lifespan of a console. Developers aren't going to spend extra money mastering the PS3 architeture when the potential reward is the smallest of the three consoles. In five years, the 360 successor and Wii successor will be available and most likely more powerful/easy to develop for.