DMC explicitly mentioned Yammer as one of the things that some of his former co-workers had done. (He neglects to consider all the things his other colleagues have done which failed, classic survivorship bias, but that's not my point.)

My point is, from a certain perspective, everything looks stupid, and everything has a limited impact, and everything could have been better. Maybe some people who work at Yammer feel they're doing something important, like democratizing information flows within big companies. But it's also a knockoff of various social networking tools for the enterprise. It's a matter of which perspective you choose.

DMC looks at Yammer wistfully because it seems like a big score that was within his grasp. But I bet that if DMC had worked at Yammer he'd be picking a narrative closer to this: I worked for a lame knockoff of innovative companies like Twitter and Facebook, and we failed to thrive independently, and in the end we had to be sold to a dying and clueless organization like Microsoft. And I made a little money, but I never achieved a higher executive rank - any idiot could have made the money I did, and it was barely enough to cover a small house in a not-so-great part of Palo Alto. But the real players made serious bank! People that I worked with who didn't seem much smarter than me! I wonder if I will ever do something worthy of the promise I had when I was a child....