Why F2P?

Why is the clan world stuck in F2P? If you look at the clanning community, most major clans have always been warring in F2P, and have been mostly F2P clans. It seems like this is frankly a waste of membership...I understand the warring styles are very different but is F2P really favorable? F2P is significantly slower moving, and doesn't necessarily take any more skill than P2P does. P2P is just like a really fast paced F2P, and I don't understand why people don't take advantage of P2P PKing. When RS2 first came out I would assume the obvious answer to this is that the vast majority of people don't have membership anyway. However, now, a solid majority of the clanning community is P2P.

So..why no change?

Note: Don't reply with posts such as "Because P2P is dead". Yeah, it is, but that's part of my question is "Why is P2P dead?" I'm questioning why it's dead in the first place.