In early 2000, Adelphia acquired the cable system in the eastern half of the San Fernando Valley from TCI, which was in the process of being taken over by AT&T at the time.
They have made very few channel lineup changes since taking over the system, except for adding a group of Spanish channels to digital cable.
Also, since they're allegedly a family-friendly company, they eventually dropped the Spice channel and Playboy TV, because they refuse to carry any porn channels. This means that certain actors who live and work in the Valley have to rent videos in order to watch themselves at home.
However, Adelphia seems to have no problem with the existence of programming such as "G-String Divas" on HBO, for example.