If you store simple encrypted stuff at them, then it works fine. Using OneDrive, Google Drive or anything alike to store a large(-ish), often-changing volume in

If you store simple encrypted stuff at them, then it works fine. Using OneDrive, Google Drive or anything alike to store a large(-ish), often-changing volume in a way that it does not leak information does not make sense, because the performance would be horrible then. If it does not change often, then it does not leak much information, naturally.