I met tonight with an incredibly bubbly, bright, talented, idea-filled young woman to discuss a couple of projects, both book-related and non (hope to be able to tell you all about her very, very soon!!). At the end of our conversation, she asked "So, hypothetically, what happens if no one (as in publishers) wants this?"
"Well, we do it ourselves," I answered.
The way that content is being produced and consumed is at such an exciting crossroads. This of course doesn't apply only to books--at all. But I actually think that's one of the most exciting parts. Written words, video, still images, drawings...the list goes on. It can all be integrated. The ways you can tell your story are literally limitless.
Don't be scared. Find professionals to collaborate with; blazing a new trail is always about finding the right people to do the right jobs. But don't be scared.