This question is waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay
too early to ask.
The only answer will come over the next 5 or so years. With the first real concrete info starting to meaningfully emerge in about 2 years. What do I mean? Well, we need to look at the XB1 once it's got a firm install base of 10M+ (which is almost a certainty by 2015), and once there is enough data to analyze whether it's resulting in a real shift in how people spend their money and time with living room entertainment.
There are all kinds of possible outcomes and unforeseen pluses and minuses. Hell, look at the PS3. People buying them as de-facto Bluray players actually HURT them in many ways, because they don't make nearly as much money when you never buy games on a loss-leader or low-margin product than when you buy a few games each month and subscribe to their online service. If people spend more hours with the PS4 playing cheap indie games, or more hours with the XB1 using it as a TV tuner, that's less hours spent playing the big $60 cash-cow games, and less of them to be sold. Offer too many alternatives to NOT play big money games on the consoles, and Sony/MS might begin to bemoan people's entertainment choices.
I swear, if I see another "X is a failure or a massive success" based on extraordinarily limited information, my last vestiges of hope in humanity will evaporate completely.
Even the fact that the new consoles are currently selling out isn't a guarantee of ANYTHING. The economy could swing down in 2014, causing some major slips in adoption. Once the dedicated fanboys and die-hard gamers buy theirs this holiday season and early next year, the more casual buyers might put the PS4/XB1/WiiU off due to price/library (after all, 360/PS3 sales were mediocre after their initial launch timeframe until the price drops and library really built up). Who the hell knows. We'll just have to watch how things unfold.