I'm still trying to grok why ISPs are supposed to treat all customers equally while PayPal, eBay, youtube, GoDaddy, Twitter, etc. are allowed to pick and choose. I'd be more comfortable with the arguments if people were consistent in them.
The former provide infrastructure that the latter services run on. They are therefore in fundamentally different categories and so different regulations apply. That's why there isn't consistency between them, because they are different things.
It's a convenient kind of bullshit to draw a line below layer 4 of the ISO stack and say "everything below this line has to be fully neutral, everything above this line can be fully biased and curated". A company that provides their own content, such as Netflix, is very different than providing a platform for other people's content, i.e. Youtube/Twitter/Facebook.