The carriers' version of killer shampoo is the extreme user who is selfishly eating up so much wireless bandwidth that carriers are helpless to provide even adequate levels of service to everyone else with a smartphone.
Carriers complain that the FCC is shackling them with oppressive regulation, preventing them from properly managing their networks and allowing them to be victimized by anarchic, patchouli-smelling, financial-district-camping subversive bandwidth pirates whose reigns of terror the carriers did nothing to promote and whose outrages damage the Economy and Moral Fabric of these United States.
Relentless competition for data hogs
That's good political theater for people who still believe anything carriers say about their intentions for net neutrality, the technical capabilities and bandwidth of their networks or the degree to which they are involved in the technologies they claim will be their downfall without radical deregulation.
AT&T, for example, consistently sits at the bottom of the performance- and customer-service-rating scale.
Consumer Reports rated AT&T service the worst of all the major carriers at the end of 2010. During the following quarter, the first of 2011, its rating dropped even further. AT&T finished 2011 still at the bottom of the list in quality of service and satisfaction of its customers.
Higher-rated carriers spent most of 2010 and 2011 chasing what AT&T had, though – the iPhone and its data-hogging customers.
Verizon eventually managed to get iPhones to sell and, along with them, another reason to complain that it should be exempt from net neutrality regulations because all the new iPhone customers were hogging all its bandwidth.
(It definitely helped attract the "hogs" that Verizon offered unlimited-data plans for the iPhone at first, though it quickly nixed that in favor of bandwidth-use-limiting data caps and higher fees for every byte a user downloads beyond 2GB/month.)