Ahh, but we accept the unbounded authority of law to dictate far more than our internet: our property, our freedom, and (unfortunately) our very lives. What reason is there to expect the government not to regulate every other aspect of life with data from the internet? At least Comcast can't do that.
The change process doesn't exist at all if the services that are offered by a company are entirely private, except by customer choice. And if there are too few choices, then well a monopoly ISP could ban encryption on all their offered links, and parse all the data going by for resale to marketers and right back to the government too - except perhaps for those inconvenient government privacy regulations (or other regulatory rules) which may stand in the way.
The issues are nearly entirely orthogonal. Network neutrality was pretty irrelevant to them installing boxes to spy on all our communications. It was irrelevant to using that data to decide whom is a communi... err terrorist. It will be irrelevant to when they decide to use that same data to limit your freedom.
I have at least token influence over the behavior of my government. I do not have even the illusion of input into Comcast's iptables configuration.
In a truly competitive market it would be different. And I'd love to see a truly competive market. But as it stands, the alternative to government isn't freedom, it's unbounded and unchecked power by the cable monopolies to decide what the internet is and isn't. If someone's going to make that call, I'd rather it be someone I can vote against.