Awww, how quaint, Grammie and Grampie still have their landline. Remember those? Jeez, I bet they still have a rotary phone someplace in the garage. Well, you know Grammie and Grampie don't like missing out on the conversation, and when Grampie picks up the extension, he says it isn't loud enough.
Implications - Many technological systems such as gaming devices are built so that you can share the fun with more than one person. Businesses that build items that are meant to be used and shared with others provide a great source of entertainment for people who have company. With a society so based on communication through technology, it is important to have access to items that are meant to be used face to face.