To the argument with actors, I think much better analogy would be making movies with dolls. Not everyone has time and/or skills to make really great ones, especially if their movie required a lot of them, so they would rather borrow dolls some professional craftsman made, than making ones that are not that great themselves. You couldn't really blame them for it and if the movie itself had original story, good screenplay and unique characters for the dolls, it might be worth watching, even though you've seen those dolls in hundred other movies.