It’s about producing professionals. If you produce pros, especially for your team, then you are doing a good job.
If you incentivize winning, you are going to do your best to win and ignore player development.
Player transfers fund training. If one player produces a fee for the club, it can pay for the program for a while.
This is about Ajax’s youth development program
https://www.fourfourtwo.com/features/inside-ajax-how-become-worlds-greatest-talent-factory
Another one about revenues
https://edition.cnn.com/2019/02/13/football/ajax-youth-academy-spt-intl/index.html