Do ya'll not already just have your consoles connected at all times anyways?
Well, I'd bet that a chunk - a shrinking chunk, but a chunk nonetheless - of the audience that buys and plays Xbox games does not connect at all, especially kids whose parents won't spend money on Xbox Live.
Barring that, I don't have mine online at all times. When my Xbox was my main gaming platform, I often got tired of updates that didn't seem to do anything for me so instead of waiting for the (very short, admittedly) download times, I would just unplug the ethernet cable and leave it out for days or weeks on end, especially as time went on and I played less and less multiplayer. These days, I just don't want to connect my Xbox to the internet. If it gets turned on, it only gets turned on to play the occasional single player game. That's just anecdotal, admittedly, but I hardly doubt I'm the only one who doesn't care to have his Xbox on the internet at all times.
The "...but Steam does it!" argument doesn't hold much water for me because it's almost assumed, these days, that you will connect your PC to the internet and it will be online most of the time. Also, people expect their consoles to "just work". That is one of the marks against PC gaming - it doesn't always "just work". If it requires an internet connection that someone suddenly doesn't have for more than a day, then the console doesn't "just work" all of the time.