You're assuming the author is reporting gross receipts, which he may well be. But your back of the envelope calculations aren't convincing, particularly given your tone.
("Monster" is your word. The text, which I've now heard excerpted on the radio and in this article, is painting a considerably more complex picture.)
("Monster" is your word. The text, which I've now heard excerpted on the radio and in this article, is painting a considerably more complex picture.)