Looking at all World Cup winners from 1962 through 2018, economic analysis suggests winning the WC boosts domestic GDP by at least 0.25% in the two subsequent quarters primarily due to export growth. For example, 1.12 billion people watched the 2018 WC final and that increased exposure boosted global demand for French products. Hosting the WC does nothing, I guess all stadium interiors look identical. Congrats Argentina.