It's always been a bubble, but it used to be a very small bubble. Then in the mid-XX century it grew to become a very large bubble, which appeared to have becom

It's always been a bubble, but it used to be a very small bubble. Then in the mid-XX century it grew to become a very large bubble, which appeared to have become self-sustaining. The internet seems to have changed that, possibly because it removed the real economic structure that sustained such bubble.