See that bitcoin fraud idiot - his brother was out trying to buy an entire island nation to set up their apocalypse fortress. These fuckers get together and discuss how best to keep their loot and continue to plunder. My guess is the Effective Altruist oligarchs, or at least a lot of them, have decided that the climate disaster is unavoidable and Much Worse Than Expected Much Sooner, and that the most effective altruistic move is to save their asses in their hidey holes until the die off is complete.