To understand what really happened, let’s examine what didn’t. Competition. From the new startup du jour. They are marginal contributors at best to Twitter’s sudden decline for the simple reason that people do not use them enough to attribute said decline solely to them — and the larger reason that they are not substitutes for, but complements to, micro-messages.
Why Twitter’s Dying (And What You Can Learn From It)
umair haque

Some data here would buttress your point.