Why? The internet is many-to-many, but that includes one-to-many. So what if the public can talk back? Either the tv-sites are going to do something with the feedback (interactive gameshow?) or they're not going to offer a service that permits backtalk.
What's more, the internet routes around damage. TV signals don't, or at least not as easily. Given enough servers (host @ Google?) the internet is a far better way to deliver disaster updates, from a technical point of view.
What's the problem?