I think there's also a kind of mass hysteria / compliance that means that nobody is prepared to go out on a limb because of what will happen to them. Just look at all the pundits picking last season's champions, sure its not surprising that nobody picked Leicester, but they almost all went for Chelsea. Did every single one of them really believe that? Or were they reluctant to mention the signs that the Chelsea performance actually fell off half way the season before - surely someone noticed? Perhaps the reason they still went with the crowd is more psychological than anything else.
A succession of managers and pundits all seem to have a higher opinion of Rooney than the football watching public, and even when there were suggestions that he should not be an automatic starter some were astonished that people could have that opinion. A succession of managers and pundits thought Gerard and Lampard could play in the same team, when plenty of evidence suggested the contrary. But nobody would take the hard decision. In fact I think the last hard decision made by an England manager might be when Hoddle left Gasgcoine at home (quite rightly) and there was quite a stink about it in the media. Do managers have the balls to make those hard choices?
I can't blame the pundits for picking Chelsea, as I think that I did that myself, to be honest.
Nobody else appeared to make any substantial improvements and they didn't seem to lose anyone of any importance.
They were undone from within by behind-the-scenes nonsense that nobody knew about.
Mourinho certainly became more defensive after the game at WHL, but that's par for the course for him, anyway.
Picking the best players is the easy way out and deflects media criticism, but it's a temporary fix, as it'll come in droves when the team goes out.
Gerrard and Lampard could've worked, maybe with Scholes in the side too, but not as a central pairing in a four-man midfield.
Both of them were better in an advanced midfield role, so successive managers played neither in that position.

Stick Gerrard out wide, as Benitez did for a period at Liverpool, Lampard further forward and Scholes deep in a five-man midfield.
Might actually have a chance, then. Never happened though, obviously.