Well in my opinion I really don't think it's FIFA that has brought about the increased quality in football it's more about the clubs because that's were players play their trade every single season. It's mostly how players perform from their club side that will determine if they will be selected to represent their country in a FIFA organised competition. Yeah, it's true that Asian players are now trying compared to previous years. I believe Africa players has always been trying because we have been hearing of many African players names decades ago and still now.
Yes, FIFA hasn't done anything for the countries whose football is developing today. That's the result of clubs investing their resources in scouting or building academies, which are very helpful in developing talent. And then it's also the result of their governments constantly striving to improve the quality of their leagues and enable these players to compete better and develop their talents. As for FIFA, what they do is not much, especially since FIFA is the most bureaucratic, non-transparent, and overly political sports organization, so there's not much to expect from this organization.