Lille and Southampton sell 70 mill+ players without winning anything. Liverpool sold big before winning. That's how they ended up winning. We need to do both things, we need to move talent through the club and become a conduit for value in order to target the more specific players our coach wants/needs to win things. We aren't just going to show up one summer and buy a title winning team, and doing it piecemeal leads back to the Wenger years. A couple great players, but not a great team.
We need to take a medium term view on the club's footballing success, and a short term view on the players themselves. This whole idea of a growing a young squad from nothing but the academy and buying a couple world class players to top it off is a total crapshoot, and much more a recipe for the last 20 years than any significant footballing achievement.