Not Just What, But When
When it comes time to buy, the customer's priorities change. She might well buy from whichever store offers same-day delivery and installation.
Imagine somebody wants to document your (presumably) unique company culture. You invite her to one of your morning meetings. Now, does her observation confirm or contradict your ads?
When almost no one is in the market for what you sell — i.e., when it’s slow season — then almost no one is searching on relevant keywords.