Pornhub launched in 2007 according to Wikipedia. Mindgeek (Pornhub's owner) had a reported $460 mm in revenue in 2015. (https://www.luxtimes.lu/en/luxembourg/mindgeek-porn-empire-r...) Pornhub is privately owned, so how much of that $460 mm is Pornhub vs other properties is unknown, but Pornhub having made a billion dollars over its 14 years doesn't really seem that far fetched.