Well, who knows, I'm not saying this idea is completely fleshed out :)

There was this movie "Kingsman: The Secret Service" that had a similar plot where a wealthy megalomaniac and eco-terrorist wanting to deal with climate change by wiping out most of humanity. There was no AI or robots involved in the plot however.

Just a food for thought that the 0.01% elites will have no use for us plebs when everything is automated. We won't be useless, we will be less than useless - we will be literally a waste of space and oxygen.