I think the counter one liner to that is something like: Net Neutrality keeps big companies from controlling what you can access on the internet. But not totally comfortable with that because "access" is overstating.
Good point, I think this is important to highlight, and might appeal to people reluctant to support net neutrality.
If one supports competition and free markets, recognize that the ISP business is not free and open to competition, and used regulation to gain monopoly or duopoly status. We need some regulation to either try and create competition, or at least prevent abuse of their current monopoly/duopoly status.