Engagement - historically operators were transfixed on a household to send a paper bill and collect money for services that were delivered to the house. Life was easier - you dealt with a home phone numbers or cable subscription and never had to manage the issues with licenses, rights, restrictions and never dreamed that you could use knowledge of the people within the house to provide better service - Nielsen took care of that. Even once broadband became common place, once dial-up modems had been relegated to closets and xDSL and DOCSIS had become common household words, it was all about dry-loops or mac addresses and a household - anything behind the gateway was not the purvey of the operator. If it was delivered to a house anyone in the house could use it. Fast forward through IPhones, Android Tablets, Google Home and Siri.