If you ask me it started with SAF becoming sentimental. As Keane puts it
"People said [Ferguson] always had the best interests of Manchester United at heart. Darren Ferguson [his son] won a medal. He was very lucky.
“[Alex Ferguson’s] brother was the chief scout for Manchester United for a long time. I’m surprised his wife wasn’t involved in the staff somewhere.”
Then this sentimentality was extended to his former players with guys like Scholes and Giggs remaining with United till their nearly 40s. Sir Alex was against Gaz retiring and Gaz had to force the hand by calling the retirement himself when it was evident that he was finished. Sir Alex also chose his successor, the incompetent David Moyes.
To achieve that Sir Alex needed absolute power which explains why United's football structure was that of a club stuck in the 90s. That left a power vacuum when Sir Alex left with no football person sitting at board level. The Glazers were devastating to this club, they had no idea of football, they had no intention to learn and quite frankly they only cared about money. They saddled us with a mountain of debt and the incompetence of David Woodward who was given far too power on football matters.
Today's United is the result of this mess. We have the remnants of the United way (Fletcher and Phelan), Moyes way (Murtough), LVG way (Bout), Ole's way (Cleggy, Pert, Ramsay etc) and Woodward's way (Arnold, Judge etc). Different styles, different philosophies but all specialised in one thing ie failing.
I think we're beyond repair at this point. We've got a heavily unbalanced and huge side, with players being on ridiculous salaries who want out while still earning the dosh. The Glazers simply lack the financial clout to commit itself to the very painful restructuring United need and quite frankly there isn't the talent needed to make sure that it would succeed this time round. We need new owners with lot of ££££ and a true passion for football.