Its not what it offers, its what It doesn't.
The point is, that with such a place; the 2 week free trail can actually be removed or lessened to a major degree. While it is important that new players get a bite of the game itself, its also important that they develop their skills properly. That can be done offline, but in an environment with others; it can be much more beneficial.
I don't know if the 2 week part of the trial is meant to be a extension of the running joke, or some sort of mentally gauged standard.
If people just casually hung out there and flew, even if they didn't want to pay; there is a danger that it could create its own "game" out of what it has, but more likely then not, even if you had casual people hanging out there. It would go a long way to providing a base culture for the rest of the parts of the game to grow, without the tension and turmoil found in the MA.