I just remembered something I saw a few weeks ago...
http://www.mmogchart.com/Chart2.html
If you look at FFXI's graph, you will notice that FFXI's population peaked at 650,000 players in July 2005. In January 2006 the population was down 150,000 players. Interestingly enough, that coincided with the RNG nerf. I will not say that the RNG nerf was the only reason they lost that many accounts, but I am quite sure a number of them quit because of it.
Good job square!
XI Wiki

