Intelligence correlates highly with not having anti-social behaviors.
So a lot of the time, it's not "being smart" that carries you to wealth, its avoiding the "disastrously stupid things" that stops you from being poor.
Looking at all the horrible and macabre weapons of warfare, destruction, and death that humans have created, I find it hard to believe those instruments were imagined, engineered, and developed by unintelligent individuals.
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> Intelligence correlates highly with not having anti-social behaviors.
If we're talking about IQ, then there isn't strong evidence for this.