http://www.youtube.com/create_account?next=
I don't know where you got this idea that you have to have a mobile phone but there is NOTHING on that Sign Up page that forces you to pay for anything. All they want is basic info, the same as setting up a Yahoo, Hotmail or any other message board sign in.
So essentially you're refusing to make an email address for free access to something you never paid for the first time around?
Yeah, that'll teach them. ',:-\