Well, there isn’t much Pornhub can do to lawmakers. All they can do is block users in areas that elect those lawmakers, and hope those users take it out on those lawmakers. Possibly by electing different ones in the future who will change that law.

It’s sort of the same logic as striking or protesting; you can’t affect the people responsible directly, so you do something that inconveniences regular people who will then hopefully take it out on the people responsible in one way or another.