There are so many things wrong with this article I don't know where to start.
For one, there's no way an Apple Television (I'm'a call it "iTV") would eliminate those devices... Unless iTunes had EVERY SINGLE TV show from EVERY SINGLE broadcaster, some will inevitably still require a cable package from Comcast or whomever... It won't replace any game console because it will not carry the titles that millions of people buy Wiis, XBoxes, and Playstations for. Having said that, you won't be able to eliminate your audio tuner as you'll still have multiple sources of input... not to mention that it's what makes surround sound possible at all, which is a necessity for anyone who wants a better-than-average home-entertainment system.
Secondly, $2000????? In 2 to 4 years, $2000 better get me more than a measly 40-incher... I saw a really nice Samsung (had to be ~40") for $800-something at Target this week. I smell serious shenanigans in Gene's numbers...
Third, there's nothing this "$2000" device can do that the existing AppleTV device can't be enabled to do, very easily. Even DVR capabilities would be a snap as long as it had a live TV throughput and an HDD that was worth something.
I will readily admit that there's a lot of room to consolidate the functions of a TV, but Apple should strive to be the hub into which it all integrates - and combine with iTunes connectivity, and DVR functionality. There's no need to reinvent the wheel.
This device makes no sense.