The problem is self fullfiling. Not enough conservative people go to film school. They tend to get into the business end of the business if at all. I don't buy the conservative blacklist idea either. You can make a movie on a credit card these days. You just have to hustle.
Conservative people tend to be very down to earth and pragmatic. What sensible person in their right mind would take a career risk like the ones taken by actors, writers or directors?
Now everyone is going to poo-poo that statement. So, here's the challenge to anyone on this thread: sell your house, pocket the money, move to L.A. into a studio apartment and take acting lessons. Take any job you can find even vaguely related to show business and spend the next five years of your life doing that -- no health insurance, no benefits, no assurances that you will progress in your career in an orderly manner.
Is anybody willing to take that bet?