It's extremely resource consuming, but insane is context dependent.

If you say to the world bank they would need to invest 10 billion annually to maintain their grasp on the world economy - they'd do it in a heartbeat.
If you say to all the major banks in the world they would need to invest 20 million each, annually, to do that same - they too, would do it in a heartbeat.


"It's unlikely" / "It would take humongous amounts of resources" don't really apply to apocalypse scenarios... Obviously apocalypse means some super major events have occurred already.

I'm asking whether there is a technical / logical error in my scenario.