My guess: Porting their kernel extension to ARM is not that trivial. They were one of the first who offered these 0-byte placeholders, and they rely on a kerne

My guess: Porting their kernel extension to ARM is not that trivial. They were one of the first who offered these 0-byte placeholders, and they rely on a kernel driver, which is only available on both Windows and macOS (but not Linux). OneDrive [0] and Box [1] are moving away from their implementations and switching to Apple's File Provider API. Their motive might be less development effort, and the official API might be good enough. Still, I wonder whether the deprecation of 3rd party kernel extensions might also be a reason to switch to such a "thin client". Interestingly, Apple did something similar on Windows [2]: They are now using Microsoft's OneDrive implementation for their iCloud file sync client. Now I am wondering what Dropbox will do. Is maintaining their kernel extension still feasible on macOS? [0] https://techcommunity.microsoft.com/t5/microsoft-onedrive-blog/microsoft-works-to-ensure-a-great-onedrive-experience-on-apple/ba-p/2400803 https://techcommunity.microsoft.com/t5/microsoft-onedrive-bl... [1] https://blog.box.com/get-more-secure-seamless-box-drive-experience-across-macs https://blog.box.com/get-more-secure-seamless-box-drive-expe... [2] https://blogs.windows.com/windowsexperience/2019/06/11/apples-all-new-icloud-for-windows-app-now-available-in-the-microsoft-store https://blogs.windows.com/windowsexperience/2019/06/11/apple...