He means all 3. His "or" isn't misplaced, because it's a play on an existing phrase: "better, faster, cheaper - you only get to choose two." Meaning you cannot

He means all 3. His "or" isn't misplaced, because it's a play on an existing phrase: "better, faster, cheaper - you only get to choose two." Meaning you cannot optimize on all 3 dimensions. Here he is saying that Amazon expects you to excel at all 3, by providing a contrast to a known idiom that says you cannot.