If humanity survives, I honestly think the greed will (and should now) be considered a mental illness.
Jesus, give me $5 million dollars, and I'd live on it for the rest of my life. That'd be 0.01% of his net worth, and I'd be so happy. I think many of us would.
But these people just want more. And more. They're psychotic, and they're ruining the world. We all know what they deserve.