[lotsofpulp]

While I don't have evidence, I think it's reasonable to postulate that store A is able to offer the same products as store B at a lower price due to being able to offset it with the extra revenue earned from people having to walk across the store and buying additional products that they would not have otherwise. While you (and I) might value our time over saving 50 cents on a loaf of bread, a significant portion of the population would rather spend 50 cents less on a loaf of bread and be forced to walk across the store. For other people, the better experience might be saving 50 cents, whereas for you it's saving time.

Same thing with Google and TV commercials. For some people, privacy and security and saving time is a better experience, but for most, saving a few dollars here and there is a better experience.