promoters of a technology do not necessarily know or determine its final uses
Sometimes, the creators of a product can cause its ultimate demise. If the phone companies continued only pushing the phone from their perspective of zero socialization needed, it likely would have failed and never been accepted by society so quickly. Inventors and business people feel the need to stick to their plan, not adapting to the road and societal expectations that come along with it. What led to the eventual success of the Phone was society telling the companies exactly what they wanted; they just wanted to talk on the line and use it how they wanted. Once the phone companies accepted that their original plan was not the most successful one, the phone was able to trailblazer into every American home.