Mega-events like the FIFA World Cup and Super Bowl create one of the biggest inefficiencies in digital advertising: billions of dollars chase premium brand placements while adjacent, high-intent traffic remains undervalued. Performance marketers can exploit this imbalance by targeting sports-adjacent audiences, leveraging competitive ad intelligence, timing campaigns around predictable attention cycles, and buying inventory in channels that large brands consistently overlook. The opportunity isn't in competing with enterprise budgets—it's in riding the attention spillover they create.