if websites can be shut down on basis of piracy, what stops them shutting them down on for any other reason?
Nothing. Which is exactly why governments the world over are so happy to help the content industry: "piracy" is just another excuse to make mass-scale censorship widely accepted, because the scaremongering about paedophilia wasn't enough (the targeted websites were too small, public opinion didn't really notice them, and so the concept of net censorship being "normal" didn't really pass).
Nothing. Which is exactly why governments the world over are so happy to help the content industry: "piracy" is just another excuse to make mass-scale censorship widely accepted, because the scaremongering about paedophilia wasn't enough (the targeted websites were too small, public opinion didn't really notice them, and so the concept of net censorship being "normal" didn't really pass).