I'm glad more people are recognizing this truth. Though it's not like no one ever pointed it out. I would say that this was one of the central points of the E-Myth books (E for entrepreneur)
http://www.amazon.com/The-E-Myth-Revisited-Small-Businesses/...That said, it's possible "Follow your Passion!" is still a useful lie... I'm not sure, it's certainly a prevalent lie.