John Biggs sees the tipping point for self-publishing coming soon:
I’ve gone all in with the Indie publishing movement – I’ve released three books myself and I’ve done relatively well with all of them. But the fact still remains that the entire business of books is stacked against the Indie author. While the tools are far simpler than they have ever been, the perception that an Indie book is an inferior product, at least in the eyes of established media, is strong. But that’s about to change.
Progress has been made, but there's still more work to be done.