"The (evil?) IRC overlord and crew are wondering what you think about our new IRC network. What can we do better? What do you want to see happen with our new network? Heck, should we even have a new network?
See more in Landon's journal"
Same reason Google Plus did not catch on next to Facebook. Why get involved in yet another thing which is the same as the thing I am involved in already? It's one more thing to setup, and to keep in mind, for little or no benefit.
Different strokes, I guess.
We are not trying to be another IRC network, but to have an IRC network that we can manage our own way for purposes that are not typical of IRC.