Yeah, no. They gave money. That's a significant contribution all right, but the driving force was Jackson, from start to finish, no matter how doomed the project may have been. New line didn't urge him to do more than he intended to do from the beginning, namely doing the work of Tolkien justice. He did that. They agreed with him and posessed the foresight to fund a fully fledged adaptation. It still took a successful screening at Cannes for them to fund the final budget the movie had.