Can a small business become a monopoly? Or is that inherently an impossibility? Are you a monopoly in your local market? Can you be?
Peter Thiel's new book "Zero to One" makes some interesting insights about business in a very philosophical way. The most interesting insight is in a chapter about secrets:
"A great company is a conspiracy to change the world; when you share your secret, the recipient becomes a fellow conspirator."
This is a terrific and very enlightened way to think about your small business too. What is so special about what you do, that you wish to keep it a secret and share it only with your customers who then become co-conspirators? Ponder that and come up with an answer. If you don't have an answer now, you should find one soon.