Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Bait and Switch is at play here

The DVD cover advertises a digital copy- not a streaming service that will let you "own" a digital copy on their servers. When I buy a digital copy, it'd better be on my computer's hard drive and accessible in your iTunes. Warner Brothers, after releasing the last 2 Harry Potter movies that were actual digital copies, why did you have to change something that would make your customers mad? Didn't you use a consumer focus group as a part of your marketing strategy? Didn't think that consumers might view this DVD cover as a bait and switch tactic?That said, this movie was a good end to the Harry Potter series, although I wished that the movie had followed the book on a couple of points like having Harry using the elder wand to repair his old wand and then saying that the elder wand would return to Dumbledore's grave.