The only factor preventing Real Madrid, Barcelona, and Mourinho from winning every trophy is the entire world. Unseen forces accentuate any storyline. Referee conspiracies are not a bug, but a feature.
Barça have become more like Real Madrid over the years because occupying the moral high ground doesn't feel as good as winning titles. This is what Piqué is bristling against, when he periodically plants a couple jabs into Madrid's ribs.