Agreed. But while that stands to be true, it can't be the only fact when it comes to predicting in such situations and exploring the "what ifs"
Humans have evolved and survived catastrophes because of their insanely positive disposition, and the ability to adapt to absolutely anything. And it's innate.
Do you think people in Iraq, Syria and Palestine have access to basic necessities (the internet has been added to the list officially by HRC in the UN)? No!

In times of war, countries suffering did not have these basic necessities no matter what we've discovered and accomplished. When it comes to disaster, we're pretty darn great at evolving and adapting to circumstances and contingency plans. Knowing and believing in that, we should perhaps every once a while, practice life without the internet also. Get close to nature, enjoy proper relationships in earnest and in person - not virtually, and not to touch any extremes, but just to keep in touch with the natural and internet-free way of living just a little bit, wouldn't be the worst thing ever. Thoughts?