It's one of the most often requested feature from Dropbox: a RPi client. See https://www.dropboxforum.com/hc/en-us/community/posts/202894235-Client-for-Raspberry-Pi for example.<p>It doesn't seem to be technically challenging since they already have linux clients, and also clients that run on ARM architectures (see Android).<p>Why isn't Dropbox releasing a Raspberry Pi client?
Dropbox solves the problem of synchronizing files between devices for people who do not possess their own file server to act as intermediary.<p>So, Dropbox is the service you use when you don't own a Raspberry Pi.