No, ~£400m is a lot of money. I don't remember how much we have spent in total but it must be closer to 20%-25% of our actual spend in this period.
Pogba and Fellaini were signed for the CM position, it's a different debate whether they should have been considered CM options or not. Schneiderlin was also signed as a defensive midfielder. Fred was also mentioned as DM.
We have also had McTom and Mainoo emerge in the last 12 seasons and we signed Eriksen on a free.
Our problem hasn't been neglect but always identifying the wrong player for the position.
I don't think even when we were signing them Fred, Fellaini, Schweinsteiger etc. would be considered DM / DLP profiles. Everyone recognized the chronic underinvestment in that DM / DLP position as it was happening without any benefit of hindsight. You're also wrapping all midfielders up into a nice little basket called "midfield" and are trying to justify we spent money but that won't fly in any other position on the pitch. Imagine using fullbacks and CBs interchangeably (because "defenders") or a winger that goes down the touchline with a cut-in and shoot merchant. So I'd remove guys like Pogba at the very least.
To justify the bit that we recognized the problems as they happened, I offer a few examples: I remember Ole being asked what type of profile he was looking at for midfield (because McFred was already a meme) and he said something along the lines of someone who can do everything leading to a meltdown in this place (Ole is a PE teacher!!). Before that it was the sign a DM to unleash Pogba brigade. Many many threads on the caf are proof that we recognized that this was an area of concern as it happened.
So let's move on to the specific players we did sign at DM and what happened with each.
Schneiderlin: Sold in one season when it was clear he wasn't the right fit. Replaced with Pogba (lol). Pogba, Herrera, Mata was our midfield the following season. It was
okay. Jose instantly recognized that lack of a DM was problematic and went and signed Matic the following summer.
Matic: Stellar first season - a brief 6 month period where the midfield was perfectly balanced with Matic, Herrera and Pogba. Finished 2nd. Fell off in a year and was never replaced. Step up, youth forward / #10, Scott McTominay, welcome to Man Utd as DM.
Casemiro: Same story.
Fred: Not even a DM but if you insist, it was extremely obvious where his skillset lied (like Ugarte this season) after one season and it wasn't DM. We tried to paper over the cracks with McTominay (again a symptom of underinvestment in this position) even when it was clear that he too was not a DM and benefitted with more freedom up the pitch.
So two ageing quality DMs that were briefly good. One crap DM. One not even a DM. We've had a good DM for about
two seasons out of the last 12.
This is one of my strongest opinions about United and I don't think anyone can really change this without a mountain of data -- the DM / Playmaker position was and continues to be the most neglected position on the pitch and until that's fixed, we go nowhere. Even this season, we hope Bruno can have a Paul Scholes arc and evolve into that playmaking role. Let's see how well that works out.