Walking by faith is not easy. It requires childlike trust...and also movement. In other words, you can't walk by standing still.
When you set out to start a business, you are walking into the unknown. No matter how much knowledge or information you have about the industry, it still requires you take a step. That can be a little scary. "What if I fail?" So what! The "worse" than can happen is God already having a "Plan B" in place because He already knew!
Also, don't think you have to have all your "ducks" in a row to start a business. QUESTION: Have you ever seen ducks in a pond all perfectly lined up in a row? If you're waiting for everything to be perfectly lined up to start your business, you'll never launch and will wind up in a sea of regret.
Make a move with what you already have, not what you need or hope to get. When God sees you move, He'll move. That's giving God some faith to work with (and He only needs a little bit). Do whatever you can, and watch Him do what you can't!
"This says the LORD, your Redeemer, the Holy One of Israel: I am the LORD your God who teaches you to profit, who leads you by the way you should go." (Isaiah 48:17)