In 2010 the social web was described as follows:

"... still not a "first-class" citizen of the Web: Social applications currently largely evolved as silos and thus implementations and integration are inconsistent, with little guarantees of privacy and enforcement of terms-of-service."

13 years later this is just as true as it was then. But: the #fediverse, for the first time IMHO, has a some real momentum now. How can we deliver now at web scale? ("the social web" -- not just some corner)