What is the basis for Verizon's lawsuit against the Federal Communications Commission? Why did it claim a violation of free speech?

This side argues that carriers selling internet access Verizon, AT&T, and Comcast, for instance-should not discriminate for or against different content providers or applications. All traffic should be routed neutrally, and the carriers should not make special deals to favor some content by giving it more bandwidth so movies and games will play more smoothly and web pages load faster. So-called "zero-rating" offers, in which carriers such as AT&T and Verizon exempt their own streaming services from their wireless customers' data caps, should also be banned. Companies that provide content over the internet, such as Amazon, eBay, Google, Lending Tree, Skype, PayPal, and Netflix, typically support net neutrality, along with nonprofits that advocate for openness, such as the American Civil Liberties Union, American Library Association, and Educause.