Apple tried in the past to build something close to a social network: Ping. It failed. They tried again with Connect with Apple Music. It failed. Now some would like Apple to try again like in this Twitter thread:
I don’t this is a good idea for Apple to do so. Maybe Apple will build something that looks like a social network but without calling it a social network. The closest thing that we have is iMessages and iCloud Photo Library photo sharing. It doesn’t take whole lot of features to make it even a little bit more “social”. It is up to them to find the missing pieces and put them at the right place, at the right time.