Network effect that strong seems almost impossible to break. You're right about that. Having a better model doesn't work unless you can convince a critical mas

Network effect that strong seems almost impossible to break. You're right about that. Having a better model doesn't work unless you can convince a critical mass of people to use your system. It reminds me of the story of the Arizona Stock Exchange (http://www.businessweek.com/1997/09/b3516129.htm http://www.businessweek.com/1997/09/b3516129.htm), which was (theoretically, anyway) better for trading than the NYSE, but failed because they couldn't convince enough brokerages to leave the NYSE and use AZX instead.