Of course I haven’t seen The Island yet, but the storyline sounds as though the whole this was ripped-off from the film Parts: The Clonus Horror.
For those of you who never saw the timeless classic that was Clonus, I refer you to Mystery Science Theater 3000 as they mocked the movie a few years ago. It’s about a society where the residents live blissful, if controlled lives awaiting some sort of mysterious salvation which involves them being removed from the group. One of the people in this society gets wise to the existence of the outside world when he finds a can of Old Milwaukee. Thankfully, the can was empty. Eventually, he and a female accomplice escape to the outside world, they get chased around and they discover that they are clones that were bred to be replacement parts for folks in the outside world.
I guess no credit is being given to the earlier film. Maybe they don’t want to admit they blew a hundred mil and change on a remake of an MST3K flick.