They have some fairly hefty competition: https://www.synology.com/en-us/dsm/feature/drive https://www.drobo.com/homeoffice/#file I'm pretty sure that most NAS vendors have some variation on "Home Cloud." I think most folks that want to set something like this up, will want a turnkey solution.
All my devices now back themselves up to the NAS overnight. Cameras dump direct into the NAS via a card reader plugged into it. Family can all browse the family photo library from their phones or any device they want or cast slideshows to the TVs. Download torrents with my phone, saving directly to the NAS, then immediately watch it on my TV transcoded in real-time with automatic pulling of subtitles and metadata. I want to marry it.
Sure I’d prefer if all this was open source etc, but I played with FreeNas and various other packages and they don’t even come close in usability or ease of administration.