You seem to be intentionally forgetting that these ISPs have segregated themselves such that they do not have to compete with one another. In most of the US, you get one choice of fast internet (Verizon or Comcast or Time Warner) and one choice of slow internet (whatever DSL you can find) - you may not even get satellite or dial up anymore.
So, when Verizon says "Screw you Google and Netflix and Spotify", their customers don't go "hey Comcast/AT&T/Google, c'mere", they say "how much do I have to pay you to make the pain stop... for now..." (The customers of all of these horrible ISPs have been screaming the "hey [other ISP] come to my area" line for literally decades, but the ISPs don't listen because they have either agreed explicitly or implicitly not to push into one another's turf to maximize everyone's profits.)
This is why we need net neutrality. If the market was competitive, it'd be a different story altogether. But it is provably not (hell, they've used the fact the markets are not competitive to try to convince the FTC to allow them to merge with other ISPs because "it would not reduce overall competition, since they do not compete in such-and-such markets"), and despite the government drowning AT&T and its many children with hundreds of billions of dollars over the past few decades to build high speed networks for everyone, they still organized their networks in such a way to maintain monopoly powers (albeit in smaller, more fragmented markets).
ISPs in America do as little as possible, collecting the biggest check as possible, and use the massive profits to squeeze competitors out (like they have successfully done with Google giving up the ghost of expanding even in Mountain View California where they are headquartered and as they are scaling up to do to municipalities creating their own networks like Chattanooga). They're consistently rated as the worst businesses in America, but they are infrastructure, so we pay them anyway. And now they're learning that more profits exist in content than it does in carrying the content fairly, so they want to be the source of the content too. And that means killing net neutrality to making themselves the sole arbiters of the market.