It stands in the way of them making money, and making (lots of) money is psychologically fundamental to their identity, to them feeling superior, maybe because they don’t have much else to show for, or more charitably because they haven’t been taught more healthy values as children. Anything that limits their ability to make money is hard for them to reconcile with their self-image. It’s much easier to play down, distort, or outright ignore other parts of reality in their mind.