Many invest in a country usually not because of the people who excel in mathematics. but they choose where it is strategic and the production costs are low. for mathematical intelligence it is related to how the individual's career will be, not with the country
Well, mathematics is being used as something for development but once the formula was developed, there's no need for it and the only thing you must do is to increase the production rate. When it comes to production rate, we need manpower that operates to produce. In that way, there is successful business out there that doesn't rely too much on complex mathematics for more production. You don't need a math wiz just to build a business, you need strategic workers that will make your business grow, and that will help also the economy.