The premise of this report is flawed. How are people supposed to get online video content into their homes if they don't have a HSI connection? For many their only option is cable or teleco.
It doesn't make sense that a cable subscriber would cancel their TV service but maintain their cable HSI service to stream online videos.
Churn is to be expected, there are folks who play that game to save money sure. Other's realize it isn't worth the hassle. Make no mistake, Verizon FIOS is the best product available, but it's footprint is so limited it is no real threat to cable. AT&T has the territory footprint but it's U-Verse service, in it's current state, is no match to DOCSIS 3.