From what I've seen, there's almost a cult-like element to these soccer academies that seem to be popping up everywhere. And they're not cheap. Parents on low incomes would be struggling to send their kids long term. And this creates a problem where you end up with some kids who are only selected in some of these elite clubs teams because they have parents who have some coin and who sponsor or donate to the club and expect their little Johnny or Joanne to be given preferential treatment and a free ride...
It's plausible that many really really talented kids are being jettisoned or overlooked simply because they can't afford the registration fees and/or can't make it to training the requisite 3-4 times per week because their parents are working and so they can't get there... The flip side is you've got the cashed up mum's and dad's who can manage to leave work early (if they work at all) and get their little Prima Mara-Donna's to training no matter what.
There's a feeling that these academy teams are increasingly the domain of the wealthy and that natural ability is no longer the entry ticket it should be.
Contrast this with your African and South American countries where kids are playing the game because a) they love it most importantly, and b) they see it is a legit way out of the impoverished slums and broken social systems they live with every day. Desperation and talent combined make these kids so good. That desperation is not something you'll find in too many Aussie soccer academies I'd wager because the truth is, when they stop playing once the obsession wears off, they still have their privilege and middle class lifestyles to fall back on....