Advertising: you (her) wearing new clothing before purchase, hair/glasses/makeup, make overs; guys after 3 months of gym membership, you driving the new car, you in this specific new home... etc, etc... I'm surprised this is not already everywhere, but people are too occupied making nsfw and fantasy violence clips.
Targeted advertising has become just manipulation. I don't know if personalized advertisement videos for everyone promoting a fake world that doesn't exist is really a benefit for the world...
If course it's not a benefit, but it's an advertising angle that will work very well with a class of gullible consumers, and that is enough to justify it being plastered everywhere. I don't write these rules, I just notice them.