Microsoft announced yesterday [ghacks.net] that they plan to downgrade their various OneDrive storage offerings.
Office 365 Home, Personal and University customers are now limited to 1 TB of OneDrive storage instead of unlimited storage. The 100GB and 200GB OneDrive plans are discontinued. They will be replaced by a 50GB plan for $1.99 per month in early 2016. Free storage will be reduced from 15GB to 5GB for all free users. The camera roll bonus of 15GB will be discontinued.
Microsoft's reasoning [onedrive.com] for the OneDrive storage offering downgrades: "A small number of users backed up numerous PCs and stored entire movie collections and DVR recordings. In some instances, this exceeded 75 TB per user or 14,000 times the average."