quantity of data stored on laptops/desktops

Below is the headline to a promotional email I got promoting a whitepaper.  The notable thing to me is the data on the amount of data stored on endpoints (i.e., desktops and laptops).  At present, I'm putting laptops in place instead of desktops at a rate of about 20 to 1.  Laptops have the ability to travel which makes them harder to back up, and if 28% of data is truly stored only on these endpoints, then an online backup system makes more and more sense.  My favorite (and has been for years) is Backblaze at $50 per computer per year (not a paid endorsement).  I've looked for better options and have yet to find any.