Your metaphor is using the end user. That's not what net neutrality is about -- charging every end user the same regardless of the speed of their connection or the amount of data they use. Net neutrality is about ISPs charging content providers like Netflix fees to let Netlfix's content be delivered over that ISP's infrastructure. The concern here is that ISPs could effectively stifle innovation or competition with these fees.

Imagine a start-up trying to compete with Netflix but being unable to pay the fees from ISPs or having to reflect those fees in their pricing to end users, but since they are just starting out and don't have the same library as a Netflix, they can't compete on price because of the fees.

AT&T now owns Direct TV and its subsidiary Sling TV. AT&T could, in theory, charge any Sling TV competitor a fee for carrying their content over their network, but not charge Sling TV that same fee, giving Sling TV an unfair competitive advantage because it doesn't have to pay the fees that its competitors are paying.

Net neutrality is about ISPs treating all types of content neutrally. The ISP is free to charge the end user by speed and/or volume of data, but the ISP doesn't care what that data is. That's net neutrality, at least as far as I understand it.