Ideas can't be stolen, they are not property. To turn an idea into property you have to take out a patent. Then you have property. Usually ideas are not patent

Ideas can't be stolen, they are not property. To turn an idea into property you have to take out a patent. Then you have property. Usually ideas are not patentable because they've been done before. I sympathize with you not getting the job, but don't worry, you'll have other ideas. Ideas in themselves have no value. The ability to have ideas is good. So instead take this as encouragement and move on to the next idea.