Am I really an expert in this?
We are not always the best person for a task we care about. We might think that because it’s our vision that we are the only one able to fully implement it. It’s not likely. Often a great vision requires the skills and expertise we can’t perform. Even if we could perform them I am willing to bet that there is someone who is much better at it than we are. To say that we don’t recruit more people because we are protecting quality really says a lot of our inflated opinion of our own skills compared to the real experts that could join the team.