When I was at Dropbox, one of the big threats to the business we talked about was OS's banning file sync applications and forcing them to use their own APIs for them instead. It looks like that's finally happening now, unfortunately.
So the tricks Dropbox did early on to show unique icons etc., now built in.
OneDrive personal and business use this fine, so can others, and then they all behave consistently with similar looking icons and affordances, whichever sync providers the users use.
Like many things HN devs complain about, devs forget they are not the main character, the user is.
This experience convergence is fantastic for users.