Note that existing bandwidth usage has been driven by digitization of existing media formats, for which there was already a technology and industry - first print, then print+images, then audio, then video. People have been producing HD-quality video since the beginning of Technicolor in the 1930s, and while digital technology has greatly affected the production and consumption of video, people still consume video at a rate of one second (and about 30 frames) per second.

There are plenty things that *could* require more bandwidth than video, but it's not clear that a large number of people want to use any of them.