@BobbyBoy On your last point, transfers and wages are too high, but City aren't first port of call for that so it's not the reason why City are better than everyone else as you seem to be suggesting. It's United, Chealsea, Liverpool, Real, Barca, Juve who are most to blame for the out of control transfer market. City have made a few transfer errors no doubt but no more than the next big 6 club. Other than Mendy who suffered a bad injury and has not looked the same since(which can happen with any signing). Pick a player in the current squad who you think City overpaid for and tell me why. The market is what it is, City might not always sign bargains but they do set hard limits when trying to sign their targets.
The damage was done well before City got taken over, I suggest you look up the progression of the world record transfer fees, it was always heading the way it's gone which is why it's wrong how fans of those clubs now try and point the finger at City. Also, you should note that City's highest transfer fee is closer to Spurs than any other big 6 club. In fact, people try and ignore the fees received for Danilo and Otamendi when talking about the fees paid for the players coming in the opposite direction. That is a symptom of the selling clubs trying to balance their own books to stay with in FFP limits. Otherwise you could knock 10 to 15m off both of those transfers because they definitely over paid us for them, it's obvious to see what's going on at some clubs.