Why the 8% Increase for Basic TV & Internet for a Senior Citizen?

Xfinity is now up to $74.95/month for Basic TV & Economy Internet which is an 8% increase for seniors on a fixed income.  Xfinity doesn't give us any more channels to watch on TV? In fact, I can receive 48 channels from an Over The Air Antenna with a much sharper picture that is HD quality, and not fuzzy like cable is because the signal is transmitted through cable DTA box which is very poor!.  I'm seriously thinking of getting rid of Xfinity TV and simply using an Overt the Air Antenna and getting TV for FREE!  No Bargain here from Comcast/Xfinity!