If I were amazon, I would've prepared to do a price cut when Google announces one. Then when they announce it, just push the button. Why give up margin earlier

If I were amazon, I would've prepared to do a price cut when Google announces one. Then when they announce it, just push the button. Why give up margin earlier than necessary? * Of course waiting to do a price cut till their competitor does leaves a bad taste in some customers' mouths. But I bet they think they're far enough ahead that it doesn't matter. Would Netflix and similar big AWS customers really leave AWS over something like this? * This strategy even has a name: "follow the follower". Very common strategy in sailing.