Earlier quoted context omitted.
We can still get on track provided we do not get fascinated with Data Silos in the name of Social Media.
Unfortunately "data silos" are very convenient to end users, and also allow them to easily discover new content - which solves the main problem of the distributed content, the bad discoverability.
However, I would argue a far greater problem was the early lack of editability; Berners-Lee originally conceived of his WWW as a network of editable documents, where every user could read and write with equal ease. His prototype web browser was, to use a desktop analogy, a “Word for the Web”; a true web editor, Opening and Saving documents stored online, just as Microsoft Word directly opens and saves documents stored locally.
But Tim got lazy and impatient, and shipped his first public browser as a cut-down web viewer. Which Mosaic then copied; and, before anyone knew any different, the web was recast as a read-only medium of the masses, with web editing the exclusive domain of technical and corporate elites only.
A single thoughtless corner-cutting mistake, creating an artificial bottleneck upon which trillion-dollar global empires have now been built. You can still see the remnants of the original direct interaction model in HTTP’s PUT and DELETE verbs, like the hindlimbs in a blue whale, rendered just as powerless from the ignorance and avarice of this new web’s Intelligent Design.
Tony Hoare named NULL his billion-dollar mistake, but that’s a rounding error on the scale of TBL’s fuckup. As for Dave Winer? Best and worst, maybe a couple of Benjamins.