In Avengers Infinity Wars the villain snaps his fingers and wipes out 50% of all living creatures.
His rationale is that it will save people from starvation and collapse due to resource exhaustion in a finite universe.
Presumably the impact of the loss of half the workforce and half the consumers would threaten to implode the economy as many markets would effectively lose half their consumers.
Assuming governments and industry were able to in some way function after the snap, would they reach for the tools they're used to deploying in economic downturns and try to stablise the economy through a massive stimulus package to fill the gap left by the missing consumers?
Would the intent of such a stimulus be to permanently negate the snap by enabling the remaining population to consume double the resources they previously did? Would it be successful?