I experienced different and in some ways more pernicious data loss with Google Drive several years ago: I was writing a novel, and Drive simply erased random paragraphs of text. Just poof, gone. I could find neither rhyme nor reason for it, either. Some had been edited in after the fact, while others were present in the original draft. All told, it equated to around 8K words over the course of the novel.

Granted, you usually want to pare down your words during the editing process, but I'd rather do it manually rather than have some malfunctioning computer system prune random blocks :)

I sent a support email, but it will surprise no one to learn I never heard anything back. Needless to say, I haven't trusted Google Drive since.