Even worse, once you've convinced investors that you're an essential component of the internet and you get a monster valuation, the only solutions worth looking at are ones that will fulfill a destiny that recedes with every passing day. Who is going to be the CEO who says "fuggeddaboudit, we ain't never gonna be Facebook. Learn to live with Twitter as the unfiltered (and therefore troll-infested) breaking news utility and whatever valuation that brings us."