Disrupted by a new business model and that business model isn't going to change.
First and foremost Utd and Arsenal are a brand, same with Liverpool, to varying degrees they'll all spend to maintain sporting relevance, but not sporting excellence, they're interested in maintaining their not quite there but there abouts status, that's the optimal revenue generating mode. Any extra investment to become a continuous winning machine like us leads them in to the land of diminishing cash returns.
United, Arsenal, Liverpool are, to varying degrees, cash cows, and we'll never be that under this ownership.