So western countries should have sent their armies to prevent developing countries from building factories and power plants? Refused to trade with them? Given

So western countries should have sent their armies to prevent developing countries from building factories and power plants? Refused to trade with them? Given the economic and social incentives at the time (and to a large extend currently) simply reducing energy usage was not really feasible. It's not at all reasonable (and in my opinion largely unethical) to expect people to sacrifice their wellbeing due to some theoretical global threat they hardly knew anything about at the time.