Well, the problem with survival fiction is that it always assumes that people are able to get to their preps/supplies/etc. In reality, scenarios that preppers (and others who enjoy apocalyptic disaster porn/fantasy) envision would, in actuality catch them (and everyone else) entirely by surprise, leaving them stranded with only what they have with them. Thing is, most people who consider themselves preppers are going to have a decent amount of supplies within reach, which would invalidate OP's question in any case.
Lastly, the thing to remember is that absurd questions like "What if you only had a folder to survive a longterm OMG apocalypse Walking Dead scenario!" are absurd because they still put the main emphasis on gear. Gear is actually only about 10% of the equation. Skills, mindset, and courage are worth vastly more than the best folding knife ever made. I don't care if you could use it to benchpress a car. Truth is, it doesn't matter what knife you have. Problem is, most people who post up questions like the OP* still think of survival or being prepared as "Well, I've got this huge pile of stuff from awesomesurvivalpreps.com and a maxed credit card, I am totally set! Check out this sweet knife! Check out this awesome pack! See that? I paid $500 for this tent. Neat, right?" Because it's super easy to just buy stuff, but not easy at all to actually learn, practice, and grow a useful skillset.
Ok, I'm merely sermonizing at this point. Sorry 'bout that. Also, understand, I'm not trying to trash talk the OP here. I'm merely trying to explain the reasons why he's getting some of the answers he's gotten, which clearly were not what he was looking for. "What folder for this insanely specific situation!" is not a realistic question. :thumbup:
*NOT saying the OP is like this, just many people I've seen in my personal experiences