The advantage with European teams is that they have the best football leagues in the world. This means that their younger players get a chance to play with some of the best in football. This is a luxury that is not provided to the younger players in CONMEBOL, AFC or CAF. However, the situation is changing now, as Saudi league is gaining a lot of traction. Even then, it is just this one league in AFC, while all the other popular leagues are in UEFA. And despite all this, some of the UEFA teams are in continuous decline (Germany, Netherlands, Danmark.etc).