>>>for the same reason you don't see laundry detergent ads on pornhub. most advertisers don't want their ads next to certain kinds of content.

Hmmm, if I had a laundry detergent company I'd totally support tailored ads for Pornhub. "Forgot to take your dress off before the bukkake scene? Don't worry! DirtBlaster Detergent can handle even the crustiest of stains!"

You've actually got me thinking about the viability of this across a spectrum of common consumer products.....