"The central conflict revolves a lot around Lex Luthor's attempts to defeat and destroy Superman. I think Lex Luthor thinks of Superman in the way that an artist thinks of A.I. Here's this guy who's this incredible genius scientist who's worked his whole life to become one of the richest, most powerful men in the world, and he does it all to be lauded. He wants to be the greatest, and suddenly this jerk comes in wearing a cape with a lantern jaw and a cocky grin, and he just takes all of the oxygen out of the room, in every room of Earth, and it creates a burning hatred in the guy."
"As for how Lex acquired his fortune, I think he has invented one of the best forms of battery in the entire world that almost everything runs on. And we don't ever talk about this in the movie, but I think that's where he's made the majority of his money. And now he's in the business of tech defense, making weapons for the government."
ew.com