I think Google still wins with the ability to select random folders from your computer to be backed up, whereas OneDrive still requires the files to reside within the OneDrive folder.
Yes. The IT geniuses at my organization just announced that OneDrive is "our backup solution". As far as I can see (I installed the client and played around with it, and read various pieces of documentation, such as they are, from Microsoft and others) it's useless for that purpose.
* It doesn't support the existing filesystem hierarchy. This business of "awkwardly-selected parts of the tree under one directory that must be in this particular place" is garbage. Particularly for our newer laptops that have a relatively small SSD as the first drive and a conventional drive of decent size as the second, where OneDrive will only sync to and from the small drive.
* It can "back up" any of three additional trees, but they're hard-coded by Microsoft (Documents, Photos, and Music, if memory serves). What braindead moron specified that feature?
* You can't exclude files by extension, unless you're an administrator configuring OneDrive for Business site-wide. That alone makes it unsuitable for backing up developer systems.
* Bidirectional sync is automatic. That makes it unsuitable for backing up files that are also under revision control. Developers need a backup mechanism that does automatic backup, but puts restore under the user's control.
* There was a note in one of the docs about it not backing up certain file types, including some of the Outlook local-storage files. If that's true, it's unsuitable as a backup mechanism. Outlook's (grotesquely bloated and inefficient) local storage is my main backup requirement, since source-code changes and the like get pushed to revision-control systems frequently.
* It only allows file and directory filesystem objects in the synced tree. Junctions and the like cause it to refuse to back up the entire tree. It's like the client was written by incompetent morons.
* Some of the management functions in the client mysteriously dumped me into Sharepoint 365 (a cesspit of another order) with no explanation.
In brief, it's utter shit, and nothing at all like a backup mechanism. No competent IT person should mistake it for one.