What is E3 then DJ? A expo for investors? Or is it the place where journalists go and report about the latest in gaming? The place that millions of gamers like you and i watch in anticipation of a glimpse at what's to come in the future of gaming?
It's for media, press, distributors, investors, etc... It is NOT a consumer show, even though we're able to watch the press conferences, live demos etc. Those are brought to us by the media that attend. One of the main reasons they closed it to the public is because it's an industry show. Go to PAX if you're interested in a conference that's targeted at consumers.
How do you not know this?