should advertising “expire”?

my brain actually spawned a new and probably stupid idea today. here’s a thought on how advertising should work from a consumer’s perspective: why not figure out an advertising delivery mechanism which would somehow expire campaigns once a consumer actually bought the product or service being pitched? for example, let’s say you’re seeing, watching or listening to some ad about cheetos flamin’ hot chips or a new honda civic. you go out and actually buy the sucker. should you see another cheetos or honda civic ad again? probably not, because the ad has done it’s job. cases can be made for “brand reinforcement ads”, but good products advertise themselves. is this too simplistic a view of advertising or could this kind of thing work? now don’t ask me the ‘how’…there’s always a way…