The cloud hype has blurred the lines between cloud storage and cloud backup. Many providers like it that way because it gives them a broader appeal in capturing potential customers. But clouding up cloud definitions confuses the market. In reality they are very different solutions for different business challenges.
I asked my circle of professional and amateur photographer friends how much digital media data they have stored. It was a quick survey, and not in any way scientific, but it did show the range of data use by photographers and videographers.