It's not a lot right now, and I don't know about its growth potential, but the convenience factor is big, I think. I was camping this weekend, and since all I had was my Android phone, I was struggling to get a video feed. But somebody mentioned that the ACC had an app, and for a one-time fee, you can get live video. $9 later, I was watching the game, with probably enough resolution that I could stream it to a TV if at home.
I don't know how much the ACC will pull out of their online wares, but it's a pretty good start.
Edit: Oh, and to the OP, good article.