That's because this analogy misses the point. We are in a thread about the difficulty explaining a problem I suppose.
Discriminating based on the type of traffic is arguably a good thing so long as it's done in good faith. Real time connections like VOIP and streaming ought to get higher priority.
It's the destination that really matters. Since UPS owns the roads and partners with Amazon, shipments from Jet.com are limited to 15mph while trucks carrying Amazon packages can go 60mph.
Or if you want something that's more like actual shipping a better example might be only UPS is allowed to deliver packages on the roads they own (like last mile ISPs), and because of their partnership with Amazon, only packages from them can have next-day shipping.
This seems like a good argument against NN. It makes me think that some traffic is much higher priority and should get special privileges.