Well yes, it's portrayed as the ultimative freedom sometimes, but whether the state just lets the corporations handle everything in developed countries or if you just let local gangs or tribes handle everything, I think those new organisations which will take over the power will oppress people's freedoms. I think some organisations will form in any case, people aren't equally strong and I think some will always gang together and try to control others. At least in the current state which the Earth is in.
As for the national anarchism... That looks pretty much against freedom by its very definition, like all nationalist ideologies.