Said it before, many times. Money doesn't solve their problem. The football knowledge/understanding/decision-making vacuum that was created when that drunken Scottish autocrat-cum-egomaniac left is the problem. He controlled all that was football there. Its in his book as a management tenet. He said it at Harvard Business School. "Complete Control." He demanded it, got it, and left with it . . . and the Glazers -- who know shit from shinola about football -- were only happy to give it to him.
What's left? A "brand." The fans. A marketing department. Gobs of money. It should come as exactly zero surprise that since they haven't filled that vacuum that they are floundering. Who's making the football decisions there? Who's the D0F? What's the plan for their academy? What's their strategy for spending over 2-5 years? It's all a muddle. So they're throwing what they have at the problem: money.
They can't be successful again precisely until they "invest." That means a commitment probably in a bunch of young, hungry, less expensive players, with a manager who has patience, skill and who they give a lot of rope to. What's important is that they give all of them TIME.
The thing is . . . with time comes failure, probably a few years out of the top four. And they aren't willing to do that. They aren't willing to break themselves down to near zero and build Busby/Ferguson 3.0. Maybe they think they can't financially, though their finances are okay by my read. So they spend. They throw money. And they fail. Because they aren't solving the problem.
Until they start over, they're fucked. Good. It is glorious.