Norway seed vault floods.
Was supposed to last a thousand years. Never get a Saps contractor to do a Neanderthal's job.
The average prepper probably has a better watertight setup for his seed storage than these guys did.
All that money, all they were missing was brains. The survivalist community has one millionth of their budget and a thousand times their capacity to prepare for eventualities. No survivalist would have stored those seeds in plastic ziplock bags on steel shelving, for obvious reasons.
I can see them scrambling at Bilderberger to come up with another strategy. Maybe this will buy some more time. :)