Because nobody in an airport wants to hear about plane crashes?
In general, that is probably true. I really don't think it would bother most people as their curiosity would override their fear.
However, some would just go nuts.
I think that is why the AIRLINES don't want TV coverage of a crash displayed on TV's at the airports. Too many nuts.
Back to your question of money going both ways...
I think CNN offered to avoid broadcasting Airline crashes and Airports only allow CNN on TV’s in the airport.
A mutual (and monetarily profitable) agreement for both parties.