Perché tanti monopoli? Suppose I am managing the incumbent firm X, and you want to enter the market with firm Y. In textbook economics, Y just has to copy what X does. But that does not work in the Internet context. Most people say that is because of network effects and lock-in, but I think there is a more important reason.
The problem with your copying me is that by the time you finish copying the current version, I will be two or three versions ahead of you
The source of entry barriers on the Internet http://www.arnoldkling.com/blog/the-source-of-entry-barriers-on-the-internet/
