Now you are catching on Thunderstorm.
Assuming we are doing this in the US, in the modern world, starting tomorrow, and everyone has planned for this and it's all ready to go. There is no more United States. No more States. No more city government either, right? No more taxes, no more social services, no more regulations, no more laws, no more rights.
Who handles 9-11? Do we have a volunteer fire department go in and deal with this? Where do they get money for equipment and resources? Who maintains the fire hydrants? Who deals with the international aspects of this? Is it all Corporate? Because if it is, you're replaced the Goverment with big business.
What about Katrina? If this is a corporate controlled disaster, is it cost-effective to house low-income people who may not even be working? Is there a profit incentive to rebuild low-income neighborhoods? Is there any incentive at all to preserve the history or culture?
I really do want to know how these things would work.