Well, China and Japan are training 6 days a week for top teams and 5 days a week for club teams. China also now has mandatory instruction in soccer for all grades plus they are establishing special schools just for soccer training like they do for many sports. I doubt parents in this country would ever go for that, they already freak out that the older girls that are in DA train 4 days a week. Our National teams don't train together year round either.
Back in the old days of my children's youth, what was seen as the ultimate recognition was invitation to the national residency camp. I don't know any parent who would turn that down. Do they still do that?