Seems like meh surface level analysis. I laughed at the part about Lampard being brought up in the ways of the club as an academy kid. When we purchased him, he was already a full-time starter for West Ham for 4 years in the EPL. I'd some Palmer could be a decent comp there, but not really.
I'm not so much worried about the academy being able to fund the system through player sales, it can, it will, and honestly, there aren't many from there that are sold that we have huge regrets about.
Our issue, which I talked about when everyone was upset about it was the 8 year deals. It's a double-edged sword. Those deals will bring the amortization cost down, but if the player flops, we are stuck with them for a long time. For 1, teams aren't going to be interested in buying those players, and 2, we'd have to sell them for a very high fee to just break-even. If someone like Caicedo flops, but a team is willing to pay 50M for him, we simply can not eat that loss, but if it was amortized over a shorter period, we could make a cheap sale at an earlier point without having to eat a loss.
Caicedo and Enzo are major issues if they don't bring their game up a level or 2 or 3. Fofana is an issue if he can't stay healthy and perform to his potential. Reece and Chilwell don't have transfer fees, but big wages on injury prone players isn't good. Cucurella is someone we'll probably be stuck with for a few more years. Mudryk isn't on crazy wages, and we won't have to worry about paying his add-ons anytime soon, so he could be moved sooner than later, but probably need a few seasons or a loan to see if we can make something on him.
At this point, Chelsea's future is dependent on a manager getting Caicedo and Enzo working as a partnership. If it can't happen, we are screwed, if it does, you at least have a foundation to work from. With no Hazard type player, there isn't anyone to just carry the team to success.