Teams need to reform their gameday scenarios. It's just not worth it in alot of those stadiums.
Hmmmm...do I want to be overcharged for tickets, sit a mile away from the action, raped by concessions and parking all day - or do I want to sit on my comfy couch, with several TVs running crystal clear HD and all the snacks and beer I want for cheap?
If I lived in Dallas I would definitely choose the live stadium. But I see why people don't. The cost is prohibitive, and the experience isn't superior enough to justify the cost and headache of attending the game.