[Clubber]

Root level domains are part of DNS. You have to go through a registrar to get listed in a root level domain (.com, .net, etc). So yes, if they block you from registering in a top level domain and you don't have an alternative, you are blocked from DNS, at least the public one.

But there in lies the problem. Private companies don't want the stink of Stormwhatever associated with their name in the press and are more likely to banstick them because profit.

I think the best solution is a public option registrar.