Pornhub list a bunch of vids with “step” in the title on the front page
Every single visitor clicks on them
Pornhub concludes everyone likes step family videos without ever testing any other theme and issues a company wide initiative to promote the step family theme until click numbers start to drop
10 years ago:
Present day:
Click numbers are still growing.
Two birds one stone.
It allows them to serve the niche kinkers and more common people.