This is just as true today, by the way. Collectively, the people in most Western countries could do amazing things to help world hunger, world peace, and so on. And yet for the most part, not much is done.
I think this is the same reason most people don't even think of starting their own company. It just never occurs to them that they can chose what to do with their life; most people just "go with the flow" in a manner of speaking, and let the world around them choose for them.