Mark Cuban was on a panel at one of the sports analytic conferences and one of the questions considered was about fan experience and making it interactive (real time stats, fantasy updates, guess the play call, player of the game, etc.). Everyone was positive until Cuban spoke up (this was mid to late aughts) about the difficulty and cost of wi-fi for everyone at a basketball arena.

How much throughput you need to sustain to make it work for the majority and the technological challenge of making it happen was something not often mentioned he thought.

But in other forums, he has clearly stated another reason to resist full scale implementation. He doesn't want to take more eyeballs off the event. He claims that fans go to the phone only when bored. I think this is a cousin of the oldster complaint that no one witnesses events anymore, they are recording or photographing the event they will watch later.

I don't buy the complaint for two reasons; one, not everyone is doing it and two, Super 8 film and Nikon cameras didn't cause people to be shut-ins and neither will smart phones.

My money is that the real reason teams haven't gone whole hog on stadium wide, reliable, high-throughput wi-fi is that they have not figured out how to realize revenue for it yet. Why disturb the money making apple cart just to provide another bell and whistle? Once they can drive revenue through it, it will happen.