We do have the talents but it's up for the management to grow those talents. Much of the recent struggles from La Masia can be directed to the incompetent management of the board. The correlation is there since Sandro Rosell took over and decided to change and undo everything related to the old regime.
The management had ton to blame for sure, but I was talking in the sense that it is difficult to grow 4 young players in same time. Each of them will need playing time while there would still be a need to have a veteran presence beside them.
In 4 years, I doubt all 4 will be in the team, but it should be a question of who should we make our bets onto and who should leave at some point. We will need to make smart decision too if all were developing well
Remember, there is other younger talents than Puig that at some point will need to have the room to grow too
Who to say a player like Montoya maybe could have progressed differently under different circumstances? He was considered better than Carvajal who was Montoya's back-up in the UEFA European Under-21. Carvajal played 45 games in his first season with Real, while Montoya played 45 games in 4 seasons with Barcelona. See the difference? Of course, he will fail and won't live up to his potential. Between the ages 18-23 years old are very important age for players development.
In this very specific case I don't blame the board tbh, Montoya was just slow unlike Carvajal. For Montoya he looked great when the game was in slow motion but once the game was too quick for him he was lost. I fell for the hype but in a hindsight he never had what it takes to succeed unlike Carvajal.
RM has been doing some good decisions in this decade in developing their players for sure. I've been pointing out to this since 2015 or 2016.