Net neutrality as generally understood says nothing about being able to pay more for a higher service tier from your ISP.

It's entirely on the publisher side: net neutrality was an attempt to avoid ISPs getting paid extra---costs that would be passed onto you---in exchange for making your experience on site A be better than your experience with site B (or service, vs site).

Think: "Oh, yeah, Netflix 4k works great on your new Comcast plan! But if you want Hulu 4k, you're gonna need to pay us more, because Netflix pays us to make their shit work better than Hulu's if you don't!"