The point I've been trying to makes is that by quite a lot of luck in signings a few years back we've already got a squad where most of the players were worth over £30m at their peak. So spending £30m on a player isn't really expected to improve us. If you look at our signings from that point of view, then most have done OK.
There's no doubt that luck plays a part but the theory in spending more money is that you try manipulating that luck in your favour. No one pays a record or large amount for someone they think may or may not be a good player, they pay it because they believe it'll be a big improvement on what we have, or at the very least help maintain a certain level. Many of ours have generally been significantly worse than what we've had and it's why we're now regressing, despite spending larger amounts, that to me implies we fail when spending big money.