In 1993, during my first year in the PhD program at the University of Colorado, we had a guest speaker in one of my classes. The subject was information technology and the Internet. He explained that at that moment, the largest repository of stored electronic data on Earth was at the National Center for Atmospheric Research, about four miles away. That building hosted two terabytes of data.
One of my external backup drives seems to be failing, so I ventured out to get a replacement.
Two terabytes. In the palm of my hand. $80.