I get your point though. I've watched some movies (at home) based off friend's recommendations from them seeing it.
So you are saying we are all just walking ads. Mind blown.
Movies wasn't a great example because it's not a product you really need. Something like footwear would have been better. At some point in time you're going to need new shoes or boots or crocs and that ad will at the very least be in the back of your mind. It may not be enough to influence you to purchase their brand, but it will have influenced you in some manner. The ad may not have immediately accomplished it's number one goal but it didn't completely fail either because it's likely to come into play at some point in time later on, even if not directly through your wallet.