A connection to the data grid doesn’t know whether it is carrying audio, video, pictures, text or something else. And it doesn’t care if it’s uploading or downloading. It is all just packets of digital information going back and forth. And the speed and capacity of a typical connection is now large enough that it can carry as many packets as you can send, as fast as you can send them. You can have a house full of people communicating through email, texts and phone calls while watching 4 different programs on 4 different televisions, and one wire can carry it all.