[markshepard]

It is not correct to say none of the dropbox competitors offer linux sync clients. We (https://www.getfilecloud.com) are a dropbox competitor and we offer clients for windows, mac and linux. We are also rank comparably well when it comes to customer rating in Gartner Peer Reviews (https://www.gartner.com/reviews/market/content-collaboration...).

It is most likely Dropbox faces higher churn in their primary customer demography (Creatives and Professionals). Their offering lack many admin controls it is not yet ideal for enterprises where the churn is low. Further, OneDrive and G-Suite offers much better value by bundling the productivity suite.