You may not legally be held liable though in many cases you can. It's a common trope within law and I'd guess derived from common sense that if you host illegal content then you are therefore bound to scrutiny for potentially enabling it. So by extension, if you care about being a free person, you are responsible for it. Anything illegal in my home and I'm bound to scrutiny and law. Why should big co's get a free pass? To me, I couldn't care less either way but consistency in law would be just lovely.