"What if" calculations through pages and pages of numbers made the Mac/PC industry and now we have IBM mainframes on our phones.
Recently saw a dated picture of an IBM storage unit with 5 megabytes capacity on a forklift being delivered. Cost unknown but for perspective one picture on your phone or one song would max it out.
;-)
Was it this?
One interesting statistic about data sizes, IMO is the fact that the Bible is just about 5 MB of ASCII text uncompressed. It makes the amount of data you are talking about something that is more easy to relate to.