The blockchain is a potential solution. But deep down I have high expectations for IPFS — I think a workable, usable alternative for Facebook there could be the beginning of a real movement towards a decentralized Internet.
Also, for anyone in this space: the Facebook killer app is Events. I can share photos & statuses in myriad ways, but I truly only have one way to access a complete events calendar for my city, organizations & social groups.
IPFS claims to use a blockchain, and that nodes in the directed graph cannot be changed. This means IPFS is of no more than cursory interest to me. I want to be able to curtail and even delete my stuff. When I delete a thing, it must be gone. I don't want a record of it, or that it existed. If I retain a thing privately, I don't want it known publicly that I have it.
Facebook's killer feature is the people, not anything else. Everything else is worthless without people and nobody is going to unseat Facebook with some technological solution unless they can convince people to use it and make it dead simple to use.
Also, for anyone in this space: the Facebook killer app is Events. I can share photos & statuses in myriad ways, but I truly only have one way to access a complete events calendar for my city, organizations & social groups.