They have a developmental system and scouts. Poor kids from nothing have a chance. For the richer European countries, they still have scouts and kids that can’t afford to play can still play and be considered. Coaching is a legitimate full-time profession over there with years of training required. There are leagues like the minor leagues in baseball. For most of these countries, soccer is their National sport. They live and breathe it and even kids with no formal training have high technical ability, can juggle seamlessly and understand tactically because this is what families and kids play and watch.
With respect to women, I started playing soccer in this area in 1975 at 5-years old. I played travel/WAGs in the 80s, HS, college. The rest of the world did NOT have women playing. It was a men only sport. The S.American countries were machismo and women were not allowed to play soccer. In England, etc., it was a male only thing. I was at a ManU game at Old Trafford recently and 95% of the stadium was male. Nobody was in the women’s Bathroom

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The US women had a 30–year head start. The US women also were always very athletic, sports encouraged—basketball, soccer, softball, etc.
Those other countries KNOW how to develop soccer players. They are now applying their methods to the women which is why they are making serious headway. The technical/tactical training is much, much better. The system with youth academies is better. I saw the England women’s National team in residence at St. George’s. It was an amazing facility. US definitely has the edge in the women player pool, time will tell if that remains enough. I don’t like that the US women have started to copy the unsuccessful US Men’s model. They were better off having more avenues instead of DA crap and no HS/other sports.