Even as Bill Gates writes books laying out the "solutions we have and the breakthroughs we need", his cynicism prevents him from actually believing any of it. Not only does he have no faith in people to muster the collective will to prevent climate catastrophe, he has neither faith in corporations to abandon their centuries-long commitment to extraction and exploitation, nor in his own ability to "innovate" a way out. In light of this, he would seem to be preparing for inevitable disaster, and in his arrogance, would situate himself as an arbiter of life and death.
Whatever technologies, models, and organizational structures we develop, to orient ourselves toward social and economic justice, we must also make space for the unwilling and the unable to be independent, self-determined, and safe. This means insulating them against the violent death throes of our system of capitalism, white supremacy, and imperialism, as we replace it with something better.