> Have you ever started or steered a company that went on to become something? Even half as big and inspirational as Groupon?

This is a terrible line of argument, since it considers the possibility of problems being obvious even to a layman as nonexistent. The next time you're tempted to make such an argument, ask yourself: "Have i ever made a full-length feature film?" I'm sure the answer for yourself is no, yet you have surely criticized one.