The Glazers operate in complete contrast to Roman Abramovich.
When you look at the relative success of each side over the last five or six years, you have to ask yourself: Do you want the hands-off approach of the Glazers, or the hands-on of Abramovich?
Chelsea had arguably the second-best manager in the world in Jose Mourinho. He could have gone on to create a lasting dynasty at Stamford Bridge, but the owner wanted to win the Champions League by playing attractive football.
Everywhere he has been before or since, Mourinho has been a success. It is extraordinary that Abramovich is even considering bringing back the Portuguese after their acrimonious and very public split.
OK, Roman has a right to dictate terms after having put so much of his own money into Chelsea. He will now have to invest maybe a further £100-200 million to keep Chelsea supping at the very top table of Europe. Ironically, his interference may be inhibiting the building of a dynasty like that at Barcelona.
Meanwhile, if Sir Alex delivers a 20th title win this season, United's American owners will have presided over five wins in six years and an unprecedented era of success. None of them tell Fergie what to do.
Some United fans may hate them and the debt they have lumped on the club, but the business and financial model has worked so far. At least it is an honest one, unlike the unrealistic levels of finance poured into Chelsea and City.
Either of the latter two could struggle to meet the UEFA FFP criteria over the next few years. You can have as much cash as you want, but if the club doesn't make a profit, you'll find yourself out of European competition.
United have the commercial capacity to make a thumping and legitimate profit. When they float, they won't have any debt either.
If the Chelsea or City owners walked away tomorrow, either club would be bust unless another wealthy dreamer came along.
There is a lesson in the Rangers debacle. We shall see a raft of clubs fail or go into administration in the next few years. The Football League and maybe even the Premiership could be unrecognisable from what it is now. And the same could happen in Spain and Italy.
So the football, business and financial models have to be synchronised. In theory, the Chelsea and City models work—to a point. But the United model works like clockwork, whether or not you like the Glazers.
Sheikh Mansour has adopted a similar approach to the Glazers and let the club get on with its business. But in the 2010-11 financial year, the Club reported a net loss on a recurrent operations basis of £160.5m.
Chelsea also lost money. The City report crows that nearly £200 million of new equity has been created recently, rather than debt. But that simply means Mansour has poured more and more of his own money into the club. He will have to keep feeding the beast to create and sustain lasting success.
And so will Abramovich.
Every football club has owners. Very few are like Ebbsfleet and AFC United, owned by their supporters.
There are football projects at City, Chelsea and Manchester United. The former two are personal, whereas United's is commercial.
Supporters might not like the commercialisation of their club, but football became big business years ago. It may be a hobby for Abramovich, but that's what keeps Chelsea at risk for as long as his interest remains. It's also why he keeps interfering.
The Glazers model is for United to be able to stand on their own two feet, continue the self-sustaining success machine and be a commercial model that can outlast all its contemporaries, except possibly Arsenal.
Chelsea, City, Real Madrid and Barcelona have unrealistic financial models that may not survive the intense scrutiny of UEFA in the case of the first two and the EC in the case of the last two.
Once United's float has been completed, they can survive both footballing and financial challenges with the right manager at the helm.
So in conclusion, there is little United can learn from Chelsea's progress this season, except how not to do the backward things.
That is not to propose arrogance. It's been a challenging season whatever happens, but even if they finish second, United have achieved more against the odds and without the financial resources of Chelsea or City. They must be doing something right.