"... it was more about putting a person in an environment and state of mind where they felt like getting the product, even if they never really wanted it. ..."

Or by stimulating the neural cortex with sound to prime you to purchase. This is the idea behind pumping music into shops. Just another technique in the toolset to make you buy, "Why We Buy: the science of shopping" ~ http://www.abc.net.au/catalyst/stories/s1907307.htm