Technology

Because they want at least some of our work to get done while we starve and fight over scraps and eventually die in poverty, conflicts, riots and violence while they hide in their bunkers and build wealthy, gated, libertarian tech-utopia fortresses where the survivors they deem "worthy" might seek refuge if they are willing to bend their knee and pledge fealty to their new tech-gods. When all is said and done, they expect to emerge from their bunkers and rule with an iron fist over the much diminished remnants of humanity, thereby having solved our sustainability problem by letting most of us get killed off, and they can then instruct their totally-dependent disciples to rebuild the world in their utopian image.

This sounds like insane science fiction plot, but you have to understand these guys have read way too much science fiction and misunderstood most of it, and they believe they have the means to turn it into science reality, and I can't predict whether they're going to succeed but I can see the writing on the wall clearly telling me that they're absolutely going to fucking try. And if we all die in the process (even including them) I'm not too sure they even care that much or are capable of thinking of those sort of consequences. These are not deeply thoughtful people, they think they are, and want us to believe they are, but they're not.