Luigi Mangione

He may not have been a Billionaire - YET - but at his age, he certainly saw himself on that track. He was already ordering horrific policies on behalf of increased profit, so he would look good to his bosses and move up the ladder. He was already an active corporate serial killer, murdering people to advance his career and net worth. Eventually, if he sacrificed enough customers on the altar of profit, he would be rewarded with a Billionaireship.