I'm sure my post will get angrily denied by many gamers here, but I think the height of console gaming has passed. Let me first say that I'm sure the PS4 will sell okay, but it won't ever surpass the PS3 current total sales of 77 million. I think they'll be lucky to reach 5 million in the first year, which is how many units of Apple TV has sold in the last year, as Apple's "hobby" project.
The original PS3, XBox 360, and Nintendo Wii came out when the iPhone didn't even exist yet. Times have changed and the recent sales figures for the Wii U shows how much. Nat Brown was right. If Apple ever opens the floodgate and allows app development on the Apple TV, boosts the hardware slightly, makes an accessory controller, and allows games to be streamed from iOS devices through AirPlay, they will kill the other console makers. Even without any of the above, they're moving 5 million units a year. If they add on gaming ability, what will that look like then?? With over 400 million iOS devices, the potential there is incredible.