Phone conversations aren't public broadcasts. Not saying you're wrong, but analogies involving one-on-one private telephone conversations don't apply to anything being discussed here.

If Xerizon was specifically created to host racism conversations etc, yeah they should be held accountable.

What if Verizon wasn't specifically created to host racist conversation but simply to have conversations, and that racist conversations just happened to be happening there (such is the reality of the situation, i'm sure people are having racist conversations on verizon phones).