As long as you can publish on the web, as long as you can write an email, as long as you can make a phone call, send a text, or even talk to the person standing next to you, culture still goes on. There's literally no way to stop it without the death of mankind.

What you're worried about is that we won't be able to buy a copy of the next superhero movie. Oh well. There's still plenty of free and worthwhile works of media that can never be forced to close.