Yes, very true. But they could make that happen. Think about it, a huge island, one plane with lets say 350 people, and 60 survivors? You could quickly become leader if there's only that many people. They could make a way. Also if the plane split in half and one half landed on the other side of the island, that would make the survivor population higher or lower. So there could be a quest where they find your beach camp and the two groups meet again. Have you ever seen the TV show LOST? The is what I'm basing to off of, but not exactly like it. They made a LOST video game but it completely svcked!
I appear to be immune to comic sans.

OT: I haven't seen Lost and don't have much interest in ever watching it. What I meant is that Bethesda could do it, but it would just be an action fest and would make it your purpose to become the leader/dragonborn/find your father. I feel that a game like this would need very interesting and compelling characters, some moments that make you realize how lost(no pun intended) you all are and, if not an original one, then at least an interesting take on the plane/ship wrecked survivor story. None of this plays to Bethesda's strengths so they would undoubtedly find a way to put some guns on the island, possibly hidden in an underground bunker that contains an evil maniac that is going to cause a nuclear winter.