You may want to also consider Windows 10's increasingly heavy reliance on OneDrive (photos, music, backups) and MS cloud services for your phone, computer, tablet and refrigerator. As people are encouraged to use more space and dump more things online, they will quickly approach the new limits, and will hopefully buy more space from the convenient nag prompt that appears at 4.5 GB.
I've had a few free SkyDrive / OneDrive accounts for a while, and have gotten some bonus space via photo sync, reclaimed the extra 15 GB to counter the reduction to 7 GB, etc. So now they might be taking 10 GB away from me, in addition to the "Camera roll bonus" which is another 15 GB? I'm not sure what the final count will be... Possibly 15 GB out of currently 40 GB usable?
I didn't fill up their space, but it was nice knowing that was available to me. Oh, well. The last thing I bought from Microsoft was a force feedback Sidewinder wheel in 2000, so I'm hardly their target customer anyway.
At least I had the foresight to stock up on some free 50GB Box accounts during their various promotions. It's probably also time to figure out how to get OwnCloud running on the NAS, fighting Apache SSL and ports, rewrite rules, NAT, etc. For free, the external cloud services with paltry storage might work for important documents, frequent files, and current projects.
And the Chinese services give away 1TB for free to anyone with an email address. As long as you don't mind the Party admiring your photos and other collections stored there...
First it giveth, then it taketh away - QoTSA