I disagree.
I don't think Trump would change his opinion based on what Democrats or people he view as the opposition says. He probably figures they'll attack him no matter what. (And I'm not sure he'd be wrong.)
However, if his core base is expresses concern, I do believe his attitude will change.
In fact, I would argue that's one of the best hopes we have.
Net Neutrality isn't partisan. Or rather, it doesn't need to be. There are reasons for both Democrats & Republicans to support it.