It would be very interesting to find out how many players cross over into 2200, 2000, and 1800 each year, if we are using those levels as "strong."
My guess...a very small number. Most of the people with those ratings have had them for a long time, protected by floors.

>Talented kids enjoy studying master games and eventually become strong players. <
Who? Where are they? If by "strong" you mean over 1800-2200, we are talking about 6000 or so people...most of whom are long entrenched on the list.
Sounds like you are talking about, literally, a tiny handful of people.