Why concerns about Net Neutrality are overblown

> Even if they wanted to, service providers would have a hard time extorting money from huge companies like Google and Netflix, because each service provider needs Google and its billions of users a lot more than Google needs it.

Didn't Netflix agree under duress to pay Comcast for peering? If the strategy was successful for Comcast in that instance why does the author feel it would not be successful for other ISPs?