If the enclaves are large enough and economically viable enough, they will work. Especially if you move in quietly and only threaten to make a stand once you are fairly well established in local politics.
The other issue with those other places is that the feds had to be progressively lighter on them after Waco as they rightfully began to fear retaliation after the fact.
That's where things get dicey. You can only defend the enclave so much from a frontal conventional attack, but options for revenge later on, well, that's another matter.
I think it is the retaliation issue that is keeping the feds from moving on any of the several Muslim enclaves that according to some leaked intelligence reports have included paramilitary training in weapons and IEDs, and the people are even posting some of their own terrorism training around the net. Why are they not getting hit? I think it is because someone somewhere has done some levels of diplomacy which has included the options I have previously discussed.
Fact of the matter is, we need some of our own enclaves too. It is absurd to try and present it as us fighting for everyone else who refuses to support us and would just as well shoot us in the back and collect a reward from the JBTs when push comes to shove. We need to find out and establish who are own people are, and then run with that, protecting our people and getting support through them, and in turn supporting our own internal economy.
That's what goes on in Ireland, for better or for worse, but they consider the establishment of the enclaves of the significant factions to be the primary step toward diplomatic recognition of those factions.
At first, most of the enclaves are semi-secret and don't need heavy publicity. Then as time goes on, exchange support and business with other like minded communities and grow it from there.
Another issue is that possibility of a mobile population, like the "snowbirds" who run the RV circuit between the Northwest and Southwest as the seasons change, and in effect, their enclaves move with them except that most don't have viable mobile businesses. What they have are pension and disability checks, maybe investment dividends, but that's something.
The economic strength of the enclave is in turning the money over within the enclave instead of exporting cash all of the time. Wealthbuilding as a group means more economic stability as time goes on. That economic security helps you handle the little conflicts, and the infrastructure you develop will help you handle the big ones.