What makes me believe that La Shawn is right that the A-list is functioning as a gatekeeper --deliberately or not-- is that there seems to be a discernable gatekeeper effect. An effect has a cause.Most of the time, that's correct. Most effects have causes. But not all. Some things "just happen that way." Systems do self-organize, and can exhibit seemingly intentional behavior that actually derives from unintentional effects of simple initial conditions.
At the risk of a heresey charge, this is a weak area in the argument for Intelligent Design. I really like Stephen Barr's "Modern Physics and Ancient Faith", but he builds a case for the sphere being an elegant, symmetrical object without discussing a very basic fact: Of any three-dimensional shape, the sphere has the smallest surface area for the enclosed volume. That's not a design feature, it's just the way the math works out.
A drop of water, a bubble, a planet, a star - they're all spheres because that shape is mathematically the smallest package.
Now, then. We certainly could have a discussion as to why it should be that the smallest, most efficient shape for a given amount of matter should just happen to have all these kinds of symmetries. That might closely related to a discussion of why i has a value of nearly 1, when its factors are on the order of plus and minus 10^6. (According to Barr, i controls the relationship fo the strong and weak nuclear forces. If i were much different than 1, the universe would either be all hydrogen or all helium - other elements could not exist.)
"Why should things be the way they are instead of some other way" is a question for deep thinkers and insomniac sophomores, but it's a different question than "Why are things the way they are?"
As parents know very well, sometimes the answer to that question is, "Because that's just the way it is."