Comment by Sargos

all that needs to happen is for countries to destroy their nuclear weapons

all that needs to happen is for governments to stop burning fossil fuels

all that needs to happen is for researchers to publish boring papers replicating others results

all that needs to happen is for fishermen to stop overfishing

Coordination problems seem easy but never really are. The chance of all the miners just suddenly agreeing to do something all at once is pretty low to impossible.