How well will your GPS receiver function when the satellites fail to receive their regular maintenance? GPS is wonderful in a less than Doomsday situation but it, too, has it limitations. I'll put my money on the person with the better skills, not necessarily the one with the most toys. I also think cooperation, rather than tooth and fang competition, will be very significant. Not to say that competition won't exist, but I'll predict cooperative groups will prosper long term more often than the Ramboesque operations.