Seasonal Convenience Plan - Broadcast Fee

I have been a customer for 20+ years.  I have my cable service on seasonal/vacation hold (Seasonal Convenience Plan).  I am charged $8.00 per month to have my cable "turned off" until I return home.  AND... I get a charge for $20.55 for the Broadcast Fee.  (And...of course fees and taxes).

The definition of Broadcast to me is "to transmit (a program or some information) by radio or television".  If that is the case, how is it Xfinity charges a monthly "broadcast" fee if there is nothing being broadcasted/transmitted to my home for any of the channels?

Please help me understand...please do not use the response of "it is charged to all cable customers.  That is not a sufficient answer.  Charging customers for a service for which nothing is received is not good business.