Vine. It was already pretty big back in 2013
but
Twitter had no idea what to do with it. TikTok actually launched just a few months before Vine was shut down and erased from the internet.
Whoever took the decision to kill Vine was an absolute moron, even without hindsight. It was square videos, how hard could it have been to shove an ads banner above it and call it a day? Incredible
That is so fascinating. They completely ignored their most most valuable users and thus the users left and the site collapsed. Fascinating, the hubris of the leadership at twitter to think they knew better than their users