It’s been said that everyone is unique, just like everyone else. But my real question is, are you better or different in some important way from every other voiceover talent? If not, as Seth Godin points out, you’re stuck with being cheaper. Not a fun position at all.
At its core, there really isn’t any competition in voiceover; at least not as long as your voiceover work is yours rather than work for “just any voice.” Clients who want you will come back to you when they need you again because you are the only source for voiceovers by you, just like I am the world’s exclusive source for voiceovers by Bob Souer. Concentrate on finding clients who want you. Then delight them again and again. I think you’ll like those results. Even more important, so will your clients.