I guess part of the problem is that there really isn't too much news that requires reporting. Transactions are swiftly reported by teams, and everything else is rumormongering based on what the teams, players, and agents want to be out in the press. There's not a lot of sleuthing to be done; you wait for the call.
After that, it's analysis, and the internet is just better at it because it can give a ton more depth than the average viewer is interested in. You specialized, get a niche, and go from there.
All that's left is just airing actual sporting events.