I bought my first HDD in the mid-90s: 850MB. There was a 1.2GB model, but I thought, "Why would I ever need that much space?" This was before videos, before mp3s, and images were all low quality jpegs.
Back in the summer of 1989, I did an internship at Imprimis (later bought by Seagate). The big thing they launched that summer was the Wren VII hard drive, which was the first consumer hard drive with 1GB of storage. It was massive!
I learned a lot about Statistical Quality Control that summer, and built them some tools for improving their SQC across all their models.
Imagine how much data could you generate daily!
Thos aside, a FHD movie in good quality still takes 10-30gb
We are still limited by size and internet speed and need to compress data