I've always been convinced a lot of top players are filtered out of the system. Every box must be ticked to progress.
Example. A mate of mine had a son who was courted by several top clubs. But, at the end of the day, he couldn't take the pressure and wasn't enjoying it. Training, being bollocked, being away from home, all took their toll.
So with his dad's blessing, he became a PE teacher. I met him in Madrid where now works about twenty years later. Really happy and convinced he made the right decision. He said it was great that all that manic pressure had gone.
He said there