"Would it be too nanny-state of me if I wanted to make a law prohibiting all Christmas music until after Thanksgiving?"
I get why they do it, these stores. It's pure classical conditioning. They provide the stimulus (happy Christmas music), and we're supposed to produce the response (buy buy buy). Retail's only means of survival is to make money, so you can hardly blame them if this tactic works. But ... why does it work? I've met maybe two people in my life who like Christmas music. Everyone else finds it annoying. And I suspect that even those who enjoy it eventually burn out on it after having it shoved down their throats earlier and earlier each year.
Do you like hearing Christmas music? Do you like it before Thanksgiving? Does it inspire you to shop more?