Very insightful comment. When you run a gazillion dollar company, you don't care about a billion here or there from porn sites, you care about not losing your gazillion dollar business. There are plenty of examples where CEOs were not conservative enough and it cost them big time - just look at Facebook's loosey goosey approach to political advertising, which in the end turned the entire country against them. From a business perspective, it's better to take a small financial hit but continue to run your business without any additional regulatory oversight.