The programmers decided it'd be best to make it that five people have to join a server in order for it to be playable. Even with less players, no one can move around, explore the map, or even learn to fly unless five members join. As of right now, only 4 BPN members have BF3, and two that could probably only play on the weekend. I honestly think that it would be a waste of time and money if BPN got their own BF3 server.
Did you count me as having BF3 Yankee. I ain't much good at it yet but I plan to learn.