There's nothing wrong with your assumption, and so far Barcelona has still adopted the same way where they always have a few players from their own academy. They are poised to be the star players of the future, it is the next generation of Barcelona that will lead the team to glory. It's just that Barcelona's financial condition is very likely to make some players to leave especially if they expect a higher salary.
Gavi, Pedri, Ansu Fati, Balde, Araujo and several other players are the academy players I mean. So they really understand the condition of the team and they also seem willing to help the team to get their glory together again. The great thing about Barcelona's current players is that they are willing to lower their wages and continue to want to stay in the team for the long term.
Now talking about Barcelona, Indeed they often orbit players from the La Masia Academy where this has been done successively to see the potential for their players to be included in the main squad in every season. I'm sure Barcelona will again get a player who is believed to have good enough abilities for them next season. Fermin Lopez may be one of the players who performed well when Barcelona faced Real Madrid. But Barcelona also continues to monitor his progress in the next match. Because If Lopez manages to keep up his impressive qualities he will very likely quickly become xavi choice in the Laliga next season.