Amazon does have the Vine program so if companies want to have a legitimate free product review program they can opt in. I’m in Vine and we’re supposed to leave a review based on using the product, take photos, etc. If anything goes wrong we are not supposed to send the product back, return it, etc. The sellers can’t contact us and if we do we’re supposed to report it. The automated “did you get the product” are fine but it’s not ok for them to bribe us.