Will we shoot virtually at each other over the Internet? Probably not. On the other hand, there may be wars fought about the Internet.
Governments should look at investment in broadband as a national priority on the grounds that having broadband access for virtually everyone creates opportunities for the development of the economy that wouldn't otherwise be available.
Virtually any appliance is going to be online. Appliances will talk to each other and to the power-generation system. Our appliances will pay attention to our preferences.