Strange that data corruption [1] is not offered as one of the options :)
[1] https://answers.microsoft.com/en-us/msoffice/forum/all/onedr...
[1] https://answers.microsoft.com/en-us/msoffice/forum/all/onedr...
...right?
UPDATE: I read the thread, and was even more disappointed: none of the official responses even acknowledged the entirety of the problem and callously disregarded important points like OneDrive for Business vs. Personal, the hard evidence of corruption, and MS' twisted messaging on backups for OneDrive...