My company was largely run on dropbox as a crucial piece of infrastructure for many years before my arrival. As of a couple months ago, it has been cut out of our production pipeline entirely, but for many years, if you saw a digital out-of-home ad in certain places, it only got there because someone had added a media file and schedule to a dropbox folder. Looking back on it, it's pretty wild how much of their business relied on dropbox working reliably. Thankfully, that's all gone now.