Sounds like you have a great business plan. In the meantime, I think that the Stack Overflow model has proven itself among nerds, and I think that your assertion that nerds are weird in some way and need completely different software than the rest of the world is not backed up by any evidence.

I disagree that the software is irrelevant. Discussion groups that don't allow voting have no way to distinguish answers that the community thinks are good from answers that the community thinks are bad. Discussion groups that don't allow editing have no way to change answers as the world changes, so wrong answers stick around. Discussion groups without tags are forced to splinter communities into smaller and smaller fragments because they have no way of dealing with overlapping communities. Discussion groups without reputation systems are overrun with spam.

I can't think of anything I disagree with MORE than the concept that "the software is irrelevant." The software DEFINES how the community works with each other and is absolutely critical.