Zenfoldor, I disagree with your comment regarding momentum. Products sell because they appeal to people on a personal level. Product availability is an impact, but the bulk of the sales don't go to people who know of sites like this, sales numbers and so on. But momentum? Momentum, if anything, is something you measure based on what else is going on. It isn't a driving factor in sales I don't believe. Having must have games and/or much have functionality in a console counts, plus exposure. Anything more than that? I don't see it at all. Things like what is going on with the Wii is an example here. It had a right price point, did motion control, and also had apps people want to play on it.
If you want to speak of something called "momentum", then talk to a company to continue to put out stuff customers want to play, and features they want. Actually what you wrote about "momentum" might explain why games being discuss on here are sometimes discussed as puff pieces by people. You have individuals hyping games in hopes that somehow it would help with the "momentum" of a console, the way cheerleader shout on the sidelines for a given team.
In regards to the "We are the world" comment, it was pointed at more of an interest in how a company is doing saleswise, than people having an interest in videogames. To concern what place these corporations finish, unless you work in the investment industry and make a living forecasting, seems to be a vain pursuit. An interest in games aren't such, I believe.