I like the concept of this photo. Maybe if this was taken at another angle it could look more empty. The last thing I'd suggest is having the closer things in focus.
How many people have berated you on your focus? My collections entry got slammed because the foreground was (purposely) blurry. I like the lines here, although the glaring lights/tv screens are a bit of a distraction.
You've got the challenge right on, but the focal point isn't so great. The picture itself is boring to me. I don't mean to offend you or anything, I'm just attracted to pictures with a lot of contrast. This doesn't have much. I like the way you've shown the whole place seems to be empty though. I have a 4.