How could a robust decentralised file system be useful?
Would you use one if one was available?
If so, to what use (storing, sharing, building apps on top of it, …)?
If not, are there some specific reasons like difficulty to set up, legal, you already use one, or other?
I’m making one and it is fully functional but adoption is not here yet so I’m trying to figure out why.
Cheers
Edit: I’m referring to a decentralised online storage, accessible from anywhere.

If you want more info just ask away, but in a nutshell my system is based on reciprocal sharing (I share yours because you share mine), so as soon as there are a bunch of users, there will never be a shortage of storage space. Most other systems are based on benevolent users who donate space, but I feel it might not scale well.
Is it a matter of everyone having a copy of every file? Or is there some sort of limit, like, a certain amount of people connected having a copy being deemed enough to ensure that it will always be available?
You decide, so if you want a redundance of 10 for example, you’d share ten (similar sized) files and ten others will share your file.