Or really the lack of a small in-line filter. Nobody at the head end knows if a house is getting more channels than they paid for until an audit years later tur

Or really the lack of a small in-line filter. Nobody at the head end knows if a house is getting more channels than they paid for until an audit years later turns up a discrepancy. At that point you don't really know if it was the homeowner doing it or a mistake by a technician so all you can do is install the filter and watch that house for convenient mistakes from that point on.