We've heard the excuses from those responsible for hiring that they don't want to take a chance on a new director. But the truth is that the industry hires new directors all the time; it's just that most of them are white males.
As somebody who has been an executive producer on a television series, I can tell you that increasing director diversity is as simple as hiring more women and more people of color.
Like any director working today, I started out when somebody took a shot at hiring me. It's how we all start out - male, female, white or minority.