This logic works in almost every situation, the only exception is a global disease.
The well being of other people is our well being, in this particular case "us" is the all human race, because the survivors will need to work with everything they have to recover an economic crisis will make 1929 a child's play.
But... but... I just wanna watch the world burn. XD
Well, if this is the case just grab popcorn and turn on the TV...