Caroline Framke Chief TV Critic Several years (and several hundreds of millions of dollars) after Amazon bought the TV rights to “The Lord of the Rings” from the J.R.R. Tolkien estate, the mammoth effort to boost Prime Video’s profile with the same kind of phenomenon HBO found in “Game of Thrones” is upon us — and it’s just as grand, if not as downright surreal, as the occasion calls for. Sure, “Game of Thrones” might have solidified a television format for fantasy epics. But George R.R. Martin’s novels simply wouldn’t exist without Tolkien’s “Lord of the Rings,” and bringing these stories to episodic life requires not just all the considerable money Amazon can provide, but a certain amount of guts from the TV writers taking it on now, some 85 years after “The Hobbit” changed the game.