There will never be enough anime fans to support both subs and dubs. The only hope for anime to survive is to come up with a digital format that can contain both a sub and a dub in one package. It could be something like a laserdisc, only smaller like a CD.
And don't say that fansubbing will take off. It's hard to get raws from Japan, and not too many of us know Japanese (Arctic can only do so much!). Distributing by VHS is hard and borderline illegal, and I doubt the American licensors will tolerate it much longer. Also, there's only so many Amiga's around to do the subbing in Toast, and Amiga is going out of business.
With all of the Star Trek around and the new Star Wars prequel in the works, I doubt that a handful of geeks will stick around to follow anime. The cultural references are too obscure, and the heavy fanservice is likely to be a turn off to wide popularity given the current backlash against Pres. Clinton, etc.