You're right that emissions-per-capita in Western countries are unsustainable, and that consumer demand is out of step with the true cost of fuel, meat, etc.
But how exactly would any country succeed in deliberately destroying their own economy? They would face revolts, civil unrest, and the economic vacuum left behind would simply open the door for any country that doesn't play along to gain a monopoly on forbidden economic growth, and potentially establish their own global hegemony.
No economic system has ever had "fair" or equal distributions of wealth, and no system will ever have a fair distribution of carbon emissions either.
But how exactly would any country succeed in deliberately destroying their own economy? They would face revolts, civil unrest, and the economic vacuum left behind would simply open the door for any country that doesn't play along to gain a monopoly on forbidden economic growth, and potentially establish their own global hegemony.
No economic system has ever had "fair" or equal distributions of wealth, and no system will ever have a fair distribution of carbon emissions either.