A more appropriate approach (to my mind) is to open a competing site, to serve an underserved community.
I believe I said this very thing the last time this subject came up. I was also alluding to this above. What must an organization do to call themselves a "St. Andrews Society?" I'm still looking for an answer. Whatever the answer is, if one group refuses to let you in their sandbox, you can always build your own sandbox. Just find out what the regulations on sandboxes are before you start building.