Surprisingly, no. Disasters often bring out the best in people: sharing, fairness, voluntarism.
It's prosperity that fosters greed. The USA has hundreds of thousands of homeless people and they don't do jack about it.
Discussion
We'll have to agree to disagree on human's survival responses, I think. The last 3 years from my perspective hasn't lead me to believe people increase cooperation in prolonged rough times.
What I was failing to describe was that in the event of the hypothetical "Hash War" regions will be fighting over power (energy). That would imply that some regions would potentially go without energy resources and thus making bitcoin very hard to access as an economic tool. Those areas would essentially lose connection to the global bitcoin network.
I'll admit it's a pretty slim chance but, nonetheless, still a valid thought experiment in my opinion.