Of course Inmarsat will encourage airlines to implement this. I believe it is in their interest as it makes them extra money and wouldn't cost them that much more. The senior vice president for external affairs claims it costs about a dollar an hour (www.bbc.com/news/world-asia-26723980). I'm no expert and pretty clueless but to me this doesn't sound like a trivial cost on a fleet of about 100 aircraft.