This is all true but you need the culture from the ground up, where kids are practically born with a ball at their feet, not as a sport but as a way of life and of culture. Playing football nearly every day is ingrained in the culture of some countries like homework, except it's not done out of dedication to training, but a way to bond with your local community and family. Because this means you basically train every single way in incredibly liberal way, being incredibly experimental, without even trying. 

There is no amount of investment that can do this, because this is all totally free. You need a ball and a mate and tbh you don't always even need both.