I imagine it was decided by the manager who works at the airport and it most likely won't be changed because they allow people to connect to their Wi-Fi and most people have smartphones. Also I believe this is a reference to the Fox News report that was done an hour ago about CNN having a monopoly in airports. I wonder if you actually noticed it before the report.
If it's like other places I have been it's determined by the manager, I'm guessing someone is a fan of the Clinton News Network...
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