So you’re saying that if everyone would flat out starve to death, they would not, or could not, spend that amount of time/money/energy to not starve to death?

I’m not saying it would be pretty, or that people wouldn’t die.

I’m just saying that actually doesn’t sound impossible.

Far more effort than that was expended per person in WW2, and that wasn’t nearly as severe of an existential threat.

Hell, in this case it would be an obvious/visible, sudden, external, non-human existential threat, so would be ideal for uniting humanity on somewhat common grounds.