Nope, there is no 0 missing. As long as we're talking about online publishing that's about it. It's completely different when we're talking about paper editions, but since Amazon has sold more electronic books last year than actually printed ones and since it takes A LOT more to get printed I think it's OK to stick to online publishing.
That is of course entirely true. The difficult part is how to get there, though.
I'm not sure whether that's true. True, there's a gazillion people out there who think they can write, but not that many who actually that good at it.
Add to that the fact that we're talking about a niche section of the online book market (I'm assuming that we do, since this is the BDSMlibrary) and there left just a handful or two of really good authors, and a bit more who write fairly well. So, if you're one of those who write fairly well or even really good then you shouldn't have too many problems finding a publisher.
As a matter of fact, you could probably choose the publisher you want to go with.