Well, no.
To what level has it?
Backbone providers have been negotiating bandwidth for decades. That's not neutral. That's just business.
The recent stink is about extending that to the end user: charging them for different types and rates of bandwidth.
Is that "just business", or is that something that will negatively affect you?
If you feel very attached to your one particular cable provider and all their services, go ahead, you won't notice a single thing change... it might even get cheaper for you. (Well, until their monopoly grows and they hike rates because they can, not because they need to. By then it will be too late. The old "good men who do nothing" adage, y'know?)
For those of us who get our knowledge and entertainment from diverse sources, we're screwed. I will have to pay to be different. Which causes knock-on effects as that raises the baseline cost of my business.
And yes, this has been done before, and it's ongoing now. Netflix still pays a premium for their bandwidth. AT&T charges for off-network traffic but 100% discounts on-network traffic to DirecTV (oh, but they're pledging in favor of neutrality, how convenient). In the past, all the big names have discriminated against competitive traffic (I don't remember the list of cases offhand). So far, those were all shot down, but not until months after the damage was done.
Tim