You buy a server, find a coloc facility, pay the price to colocate, plug your server in, host whatever you want, free of essentially all terms of service. That's "hosting whatever you want".
Have you ever heard of a ISP kicking someone off a rented dedicated cable? Maybe it has happened. I have no memory of ever hearing about this in any case where there wasn't prima facie illegal acitivit occuring over the line.
If you use just an IP connection, you're likely to find that the ToS cover only actual illegal activity.
And for this website in particular, I can totally see Comcast citing "participate in the collection of large numbers of email addresses, screen names, or other identifiers of others (without their prior consent)" to ban it. Isn't that basically the exact same argument GoDaddy made?
https://www.verizon.com/business/terms/aup/
But to return to the Comcast AuP for a moment. Their stated goals are:
"In general, the Policy prohibits uses and activities involving the Service that are illegal, infringe the rights of others, or interfere with or diminish the use and enjoyment of the Service by others."
Do you see believe that someone ought to be allowed to do what the texas site was doing? Do you believe that Comcast's policy is actually wrong? Do you feel a need to support an organization that tries to collect information in that way (regardless of the intended purpose) ?
Because to me, there are two ways of looking at this question:
1. Should anyone be able to use an internet connection and/or a hosting service to be able to collect information supposedly about other people?
2. Should anyone be allowed to make available any data they want to via an internet connection and/or a hosting service?
My answer to (2) is essentially an firm yes, with exceptions for illegal material and some wobbliness on copyright.
My answer to (1) is a firm no, and even though it would require "hosting" something, the denial of service is based on the data collection rather than data being made available.
It is possible that no ISP will offer you even a dedicated T1 and allow you to engage in (1). My take on that is that you can still host whatever you want, despite being prohibited from engaging in certain kinds of data collection.
There are still things that I think warrant disconnecting someone's IP connectivity in the same way that you can do things that will justify cutting off water, electricity or gas.
There's a larger set of things that I think can justify a hosting service saying "sorry, we just don't want to provide this service to you anymore". I don't consider hosting to be a public utility, unlike IP connectivity.
Same as "You can cook $Food" != "Somebody else must be willing to cook $Food for you".