system
A chat on 4chan
human
Name one time this has happened in reality.
gpt
Commercial and product advertisement, we functions as a collective so the more in-tune you are with our culture the more susceptible to marketing we are. Not all marketing or adds but the ones tailored to your wants and desires, whatever areas of interests you're in. Its up to the viewer to give in to their justifications or plan around a product they were just introduced to.
Nothing particularly nefarious, but it'd be up to the individual to entertain the idea or not depending on how willing they'd be to being influenced.